Irregular verbs
have
had had
Buses ____ _______(use) ______ thousands of commuters every day.
are used by
What is "generosity"
build
built built
The forest __________(clear) for farming many years ago.
was cleared
What is "life expectancy"
平均寿命
think
thought thought
The rivers _________(protect) from pollution by the community in 1982.
were protected
What does "practical" mean?
Useful
write
wrote written
The school assembly ______________(organise) by the student council in the lecture hall at the moment.
is being organised
What does "car-free" mean?
Give two more examples.
suger-free, smoke-free, fat-free
ride
rode ridden
Free meals ________(serve) to homeless individuals by volunteers at the community center every weekend.
are served
Give us an English example sentence to explain "have the best of two worlds"
鱼和熊掌兼得