I won’t go to her party unless my best friend Jack ________.

A. will invite B. will be invited

C. is invited D. invites

We can’t repair the machine. Can you tell us __________ ?

A. how to do B. what to do it

C. how to do it D. what should I do

－Ｍay I go swimming now? －No, you ______. You must finish your homework first.

A. mustn’t B. may not C. couldn’t D. needn’t

People must_____ down too many trees.

A. stop to cut B. stop from cutting

C. be stopped from cutting D. be stopped to cut

The moon cake with meat in it tastes ______ and sells ____.

A. well，good B. good，well

C. good ,good D. well, well

The ________ Olympic Games will be held in Rio de Janeiro on August 5, 2016.

A. thirty-one B. thirtieth-one

C. thirtieth-first D. thirty-first

Recently the second season of “A bite of China”(舌尖上的中国II) has become a hit.. I think Chinese are those ___ can cook the most delicious food.

A. what B. who C. whose D. Which

We should start to do our homework right now. We must not _______ until tomorrow what we can do today.

A. put away B. put off

C. put up D. put on

Look at the sun. _____fine weather it is! Let’s go hiking.

A. How B. How a

C. What D. What a

The doctors are busy doing what they can ________ the dying man.

A. saving B. save

C. to save D. Saves