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
The moon cake with meat in it tastes ______ and sells ____.
A. well，good B. good，well
C. good ,good D. well, well
People must_____ down too many trees.
A. stop to cut B. stop from cutting
C. be stopped from cutting D. be stopped to cut
－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
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
I won’t go to her party unless my best friend Jack ________.
A. will invite B. will be invited
C. is invited D. invites
