I’ll never forget the day ___ I joined the army.

A survey was carried out on the death rate of those who were infected by SARS, ________were surprising.

You have been walking a long way, so _____ is a good rest.

The difficulty we now meet with is ______ we can persuade him to tell the truth.

——Have you finished _____the book? ——Not yet. I’ll try _____it to you before Friday.

______ surprised me most was ______ he was too late for the important meeting, for he was chairman of it.

That warmhearted woman often helps ______ is in trouble.

_____ their real economic situations, they got some relief fund from the government.

You should complete in time ______ the teacher has told you to.

No matter how frequently _____ the works of Beethoven always attract a large number of people.

_______ the flight to New York will be delayed is ______ I＇m especially worried about.