Tom ____ be ill, for I saw him playing basketball an hour ago.
A. mustn’t B. needn’t C. can’t D. may not
It doesn’t _____ to set off fireworks on holidays since the smog(雾霾) is so severe at present.
A．make a difference B．make sense C．make progress D．make a choice
Two years ago, she bought an expensive mountain bike and then she persuaded me to buy ___.
A. this B. that C. it D. one
He is such ____ social failure that many colleagues don’t like him.
A. the B. an C. a D. 不填
---Sorry, sir. I can't answer this question.
---Well, you are supposed ______ this part of history.
A．reading B．to be reading C．to read D. to have read.
I promise _____ else can you find ____ better computer at such a low price.
A. anywhere, a B. nowhere, the C. nowhere, a D. somewhere,/
