28、Have you got a free evening next week?          , let’s have dinner.

A．While so       B．Since so         C．When so       D．If so

27、      of danger in the street at night, she had to go home, with a friend       her.

A．Warned; accompanied                                  B．Having warned; accompanying

C．Warning; accompanying                              D．Having been warned; accompanying

26、---Do you want tea or coffee?

---       . I really don’t mind.

A．Both           B．None          C．Either            D．Neither

25、---Our holiday cost a lot of money.

---Did it? Well, that doesn’t matter     you enjoyed yourselves.

A．unless           B．as long as         C．as far as          D．in case

24、Nobody noticed the thief slip into the house because the lights happened to      .

A．go out           B．give in           C．turn off        D．be put up

22、－Jack, my bike was stolen yesterday．Could you lend me yours?

－________．

A．Help yourself                                B．Of course, I could

C．Never mind                                  D．Don't mention it

21、The central government is calling on the whole nanon to make efforts to build ________ harmonious society and ________ new socialist countryside．

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

20、－What do you think of the furniture on exhibition?

－Well，great! But I don't think much of ________ you bought．

A．the one              B．it                 C．that             D．which

19、－What did she want to know, Tom?

－She wondered ________ we could complete the experiment．

A．when was it                                 B．it was when that     

C．it was when                                 D．when it was that