Để loại bỏ khí SO2 có lẫn trong khí CO2, có thể dẫn hỗn hợp khí đó qua chất nào dưới đây ?
A.Dung dịch nước vôi trong (Ca(OH)2).
B.Bột CuO nung nóng.
C.Dung dịch NaOH.
D.Dung dịch nước brom.

He _______ that he was leaving way that afternoon.
A.says to me
B.said me
C.told to me
D.told me

“Be aware of the dog,” said Tom. à Tom warned us _______.
A.we should be aware of the dog
B.aware of the dog
C.being aware of the dog
D.to be aware of the dog

“John shouldn’t have behaved so badly.” said Janet.
A.Janet objected to John’s behaviors
B.Janet disliked John.
C.Janet doesn't like John's behaviors.
D.Janet was angry with John.

Should you want to get good marks, you ______harder.
A.mustn’t learn
B.would learn
C.had to learn
D.must learn

Were you________a millionaire, you might be happy.
A.to become
B.had became
C.became
D.will become

I think he is not at home. If he _____ in, he ______ the phone.
A.was/ answered
B.had been/ would have answered
C.were/ would have answered
D.were/ would answer

If _____ as I told her, she would have succeeded.
A.she has done
B.she did
C.she does
D.she had done

Will you be angry if I _____ your pocket dictionary?
A.were to steal
B.stole
C.steal
D.have stolen

Why don’t you have your brother _____ the roof?
A.repair
B.repaired
C.to repair
D.repairs