－Someone might see us．

－________ ? We are not doing anything illegal．

A．What's up

B．What if

C．How came

D．So what

－Look! How tall the tree is!

－Yes．It ________ nearly 20 metres．

A．measures

B．is measured

C．is measuring

D．measured

－Shall we have a smoke here?

－No, we ________ because the workers are carrying some gas．

A．mustn't

B．won't

C．can't

D．needn't

－I wonder if I ________ smoke here．

－No, you ________．Couldn't you see the sign “NO SMOKING” on the wall?

A．can; needn't

B．may; mustn't

C．must; can't

D．shall; won't

－Was it here ________ the people shouted________ chorus“Long live the King!”?

－Yes, that's right．

A．that; in

B．that; at

C．which; in

D．where; at

－I'm sorry to have caused you so much trouble．

－________．

A．That's all right

B．My pleasure

C．Nothing at all

D．You're welcome

－I don't think I'll be able to go mountain-climbing tomorrow．

－________?

A．How come

B．And how

C．How is it going

D．How about it?

－That's a lovely sweater．You look good in it．

－Really ?Thank you．My aunt gave it to me for my birthday, but I don't ________the color．

A．go in for

B．care for

C．feel about

D．concern about

－Will you join us in the game?

－Thank you, ________I'm busy preparing for my examinations．

A．but why not?

B．but I'd rather not．

C．and I won't．

D．and I'll join．

－Why do you always lie to our mother you love her cooking?

－It's only a white lie, so ________．

A．don't bother

B．my pleasure

C．it's no big deal

D．don't mention it