Complete the passive unreal conditional sentences.
At the present time, human cloning is illegal in this country. But some people argue that it should be allowed. They say that if human cloning _____________ (permit), information about how certain illnesses develop ______________ (learn) from cloning diseased cells.
were permitted / might be learned
If computer chip implants _____ (use) instead of credit cards, _____.
were used
fewer people's identities would be stolen
Because of an increase in automated jobs, fewer people __________ (need) by manufacturers in the future.
will be needed
Within the next fifty years, scientists will introduce technologies that we can't even imagine now.
Within the next fifty years, technologies that we can't even imagine now will be introduced.
If the severe side effects of the drug ______ (make) public, patients ________ (warned) about them by their doctors. But the company hid the information, causing many people unnecessary pain and suffering.
had been made / might have been warned
If companies _____ (allow) to clone human beings, _____.
were allowed
it'd be like opening a can of worms
In 1970, a telephone that offered both sound and video was developed. Company executives confidently predicted that 3 million of these Picturephone sets ____________ (sell) by 1980. However, the Picturephone was a flop.
would be sold
By the year 2050, people will have accepted inventions that seem incredible now as a common part of life.
By the year 2050, inventions that seem incredible now will have been accepted (by people) as a common part of life.
It seems like the possible future applications of innovative technologies are endless. For example, if the technology __________ (develop) further, computer chip implants __________ (use) instead of keys. Imagine waving your computer-chipped hand at your front door to open it instead of inserting a key to unlock it.
were developed / might be used
If the Internet _____ (not / developed), _____.
hadn't been developed
information wouldn't be shared as quickly or easily
Before the next big outbreak of disease, we hope that emergency plans _________ (make) and precautions _______ (take) by governments.
will be made / will be taken
I thought an assistant would answer the phone, not the boss.
I thought the phone would be answered by an assistant, not the boss.
Several non-governmental organizations are working to achieve equal rights for all people. The organizations' supporters say that if equal rights ________ (grant) to all people, opportunities for a new way of life ___________ (create) for them.
were granted/ might be created
If the electric car _____ (introduce) sooner, _____.
had been introduced
the train wouldn't have been used by so many people
Experts now say that hydrogen fuel cells __________ (accept) as an alternative source of energy within ten to twenty years.
will be accepted
At this time tomorrow, the courier will have delivered the package.
At this time tomorrow, the package will have been delivered (by the courier).
In the past, consumers didn't know a lot about the dangers of certain genetically modified foods, so they were popular. If consumers ________ (inform) about the dangers, then the foods ________ (not buy).
had been informed / might not have been bought
If artificial intelligence _____ (control), traffic jams _____.
controlled
traffic jams would be reduced.
By the time the average person can travel to outer space for recreation, many trips ______ (make) to all the planets in our solar system.
will have been made
Because of its global themes, audiences all over the world are going to appreciate the film.
Because of its global themes, the film is going to be appreciated by audiences all over the world.