You can arrive in Beijing earlier for the meeting, __ you don’t mind taking the night train.[ ]

How does Jack usually go to school—— He ________ ride a bike, but now he is used to ______ there.

Inour school library there anumber of books on science and the number of them growinglarger and larger.

__________ is the most difficult of all thelessons.— I agree. But it’s the most interesting.

I’m afraid I can’t finish the book within thisweek. —Don’t worry. .