We must keep our classroom ________．

cleaning

clean

to clean

－Must we drink lots of juice every day?

－No, you ________．

mustn’t

don’t need

don’t have to

There ________ a basketball game in our school next week．

are going to be

will be

is going to have

I am ________ in the book．

interest

interested

interesting

－This kind of water melon is ________．Would you like to have one?

－Yes, I’d like one．

enough sweet

sweet enough

bad enough

He spent two hours ________ his homework last night．

does

do

doing

You’d better ________ tea in the evening．It’s not good for your sleep．

not drinking

not to drink

not drink

It’s ________．You don’t need to take medicine．You can go to work this afternoon．

something serious．

nothing serious

serious nothing

－________?

－They’re Chinese books．

Are these Chinese books?

Are those Chinese books?

What’re these in English?

－Thank you．

－________

You’re welcome．

That’s OK．

Thanks．