- Air quality in our city is becoming worse and worse.
- Yes. These days' PM2.5 readings are frightening. We must do something to _______ air pollution.
A.reduce | B.remove | C.collect | D.gather |
---Who cleaned the blackboard yesterday, Dick?
---John _________.
A.cleaned | B.does | C.did | D.is |
A talk on Chinese history ________ in the school next week.
A.be given | B.has been given |
C.will be given | D.will give |
I _____ 900 English words by the time I was ten。
A.learned | B.was learning |
C.had learned | D.learnt |
--Let's go fishing if it _______ this weekend.
--But nobody knows if it_______.
A.is fine, will rain | B.will be fine, rains |
C.is fine, rains | D.will be fine, will rain |
The room ___ cool in summer and'warm in winter.
A.feels | B.is felt | C.feels to be | D.is felt to be |