The store sells sweaters ______ a very good price. We can buy one ______ 40 yuan.
| A．in; at | B．on; for |
| C．at; on | D．at; for |
My father has a habit of walking ________ the river for an hour in the morning.
| A．between | B．along | C．over | D．through |
--- ______ hard work you have done!
--- It’s very kind of you to say so.
| A．What | B．How | C．What a | D．How a |
--- It’s difficult for the village children to cross the river to get to school.
--- I think a bridge ________ over the river.
| A．should be built | B．should build | C．was built | D．has been built |
--- Can we leave the classroom now?
-- No, you ______. You ______ to leave until the bell rings.
| A．mustn’t, are allowed | B．don’t have to, are supposed |
| C．needn’t, aren’t allowed | D．can’t, aren’t supposed |
You shouldn’t ______ your hope. Everything will be better.
| A．give up | B．fix up | C．cheer up | D．put up |