To form the passive you don't have to use the verb "be".
Yes, you have to.
I got my hair cut or I had my hair cut?
both.
We use the gerund as the subject or object of the sentence. True or False?
True
What's the English for "соблюдать"?
follow
The car did not invented in the 1930s. Correct?
The car wasn't invented in the 1930s.
We'll got our photo take. Correct or not?
No. We'll get our photo taken.
Can we use the infinitive + to after question words?
Yes.
I don't know what to say.
good at or good for?
both
Put this in the passive. In the future we'll use this type of energy.
This type of energy will be used in the future.
We must use the preposition by to introduce the agent. True or false?
False. If obvious then no need to.
I'm worried about make mistakes. Correct or not?
I'm worried about making mistakes.
"worried for".Is this correct?
No, it is: worried about.
We use the preposition be to introduce the agent. True or false?
We use the preposition "by" to introduce the agent.
Make a sentence using have something done.
man / singing to us / we sat in the restaurant / having our lunch
We had a man singing to us as we sat in the restaurant having our meal.
It's easy to answer that question or answering that question is easy?
Both
Nobel prize or Nobel price?
Nobel prize
Is this sentence in the passive voice? Passive sentences are useful to avoid blame.
Yes.
Her story had us laughing so much.
Correct or not?
CORRECT!
After verbs of liking, do we use an infinitive + to or a gerund?
a gerund.
Smart fridges can improve your diet. True or false? Why?
true.