22、In the face of ______ failure, it is the most important to keep up _____ good state of mind．

A．/ ; a         B．a; /           C．the; /        D．/; the

21、It is said in the book that Tomas Edison （1847-1931） _______ the world leading inventor for thirty years．

A．would be       B．has been           C．was         D．had been

20、--- Grace won’t like it, you know．

---______ ? I don’t care what Grace thinks．

A．So where        B．So what          C．So why        D．So how

19、The global warming is more and more serious, for which human beings ______．

A．are blaming                                              B．are to blame

C．are going to blame                                    D．are to be blamed

18、It was at midnight ______ he got to his friend’s house．

A．when        B．since　        C．that　     D．while

17、Can you ______ what I say? Do you need more explanation?

A．make sense of                                     B．put an end to

C．attend to                                            D．leave alone

16、---May I go and play with Tom this afternoon, mum?

---No．You can’t go out ______ your homework is being done．

A．until    B．after          C．before       D．as

15、He got well-prepared for the job interview, for he couldn’t risk _______ the good opportunity．

A．to lose          B．losing          C．to be lost        D．being lost

14、—Where is Tom?

— Well, he ______ you ______ here．Otherwise he would come down right now．

A．didn’t know; were                             B．hasn’t known; are

C．doesn’t know; are                             D．hadn’t known; were

13、_____ will greatly decide their future, most senior 3 students think, is their grades．

A．That          B．Which            C．What          D．As