根据句意，用所给单词的适当形式填空。
【小题1】PM2.5 ________ (pollute) has become a serious problem which does harm to our health.
【小题2】When he woke up, he found himself tied to a tree, _________(able) to move.
【小题3】My dad has been to Chengdu on _______________ (busy) twice.
【小题4】She refused to join our ____________ (discuss) and finished her paper alone.

动词填空
【小题1】—Jim _______________ (read) a book under the tree.
— It can’t be Jim. He’s gone to the US

A．

【小题2】— Why are you still here? It’s almost six o’clock.
— Because I_______________ (not finish) my work. But don’t worry. There’s still a little left.
【小题3】The Queen refused _______________ (accept) an interview when she went to Africa.
【小题4】I have kept the book for a week. I_______________ (return) it to the school library in a minute.
【小题5】The boy was so tired that he_______________ (sleep) for twelve hours.
【小题6】As we know the weather_______________ (change) often in the UK. It’s sunny one minute, but rainy the next.
【小题7】— How did the accident happen?
—I _______________ (think) about something else and didn’t notice the traffic lights turned red .
【小题8】My cousin Andrew was too busy playing computer games______ (complete) his homework.

完成句子
【小题1】中学生应该使用手机与家长保持联系吗？
Should middle school students use mobile phones _________________________ their parents?
【小题2】过山车非常激动人心，整个乘坐过程中我们忍不住不停地尖叫。
The roller coaster was exciting and we _______________________________________.
【小题3】我们应该避免人前插队。
We should _______________________________ other people.
【小题4】我们班由30个男生和20个女生组成。
Our class __________________________________________________30 boys and 20 girls.
【小题5】自从地铁3号线完工后，我们的城市发生了巨大的变化。
There ______________________________ our city since we built Underground Line 3.
【小题6】在设法抢救病人后，这个医生筋疲力尽了。
The doctor _____________________________________________ to save the patient.

— Do you mind me _________ some photos here?
— ___________. You can just enjoy them with your eyes, I think.

A．taking; Better not.	B．taking; Of course not
C．to take; Better not	D．to take; Of course not

Dreams are beautiful, but it needs lots of time and work to ____________ them

A．receive

B．realize

C．refuse

D．return

I don’t know _______ to learn English well. Can you give me some _________?

A．why; advice

B．why; advices

C．how; advice

D．how; advices

The boy was very afraid and he ran away ____________.

A．as quick as he can	B．as quickly as he can
C．as quick as possible	D．as quickly as possible

Here goes the bell. It’s time to ____________ your papers.

A．hand in

B．cut in

C．push in

D．put in