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I’ve got a bit of a headache. It’s nothing much, _________.

Helen plays the piano well, ____her favourite instrument is the violin.

— You should have prepared your speech for the meeting, Mr. Smith.
— Yes, I know. But how could I _____ the meeting date fixed so soon?

How can you expect him to make any improvement____ you never give him a chance to have a try?

— How long will it be _______ the president pays another visit to China?
— It all depends.

Now our school is four times ________ it was twenty years ago.

This building is both a secret and a mystery. No one shall be admitted into it ______ he can give the right password.

--What’s your idea?
--My opinion is _____  ____ happens, we should not stop the reform.

It wasn’t until nearly a month later _______ I received the manager’s reply.

We must face the fact __________ our time is limited and we must cherish every minute.