You look tired．You'd better ________ up late．

stay

not stay

to not stay

not to stay

If your mother were here, she ________ allow you to surf the Internet for so long．

won't

doesn't

didn't

wouldn't

________ Lily ________ Lucy may go out for a walk with you because one of them must do the dishes at home．

Not only; but also

Neither; nor

Both; and

Either; or

The e-mail he sent to me ________ that he knew nothing about the earthquake happened in Japan．

spoke

suggested

told

found

If you have finished most of the work, you ________ start working so early tomorrow．

can't

mustn't

couldn't

needn't

My aunt often drops by my house ________ Sunday afternoons because I am free then．

at

in

on

of

They paid ________ money for the machine than I had expected．

much

fewer

many

more

It's ________ good idea to visit our old teachers on ________ Teachers' Day．

a; the

a;/

/;/

/; the

We will celebrate the 90^th birthday of the Chinese Communist Party ________ July 1st, 2011．

on

at

in

during

We must ________ using plastic bags in order to protect our earth．

give out

give up

give away

give in