—How long do you sleep every night? —______．
| A．Later than 11:00 | B．Six and eight hours |
| C．Six and half an hour | D．Less than eight hours |
-- Mum, must I stay there the whole day?
-- No, you ______ . You ______ come back after lunch, if you like.
A. mustn't; can
B. needn't; must
C. needn't; may
Wang Fan , could you give us ______ on how to learn English _______?\
A. some advices, good
B. any advices , well
C. some advice , well
Everyone knows that a desk is made __ wood and paper is made__ wood too.
A. of , of B. of , from C. from, of
I’ m sure I can make myself _____, because I have improved my English greatly.
A. understand B. understanding C. Understood
The river has become much ______ than before because of the waste water.
A. dirty B. dirtier C. Dirtiest