38．-- _________ have you been listening to the tape recorder?

--For half an hour．

A．How much           B．How often                  C．How long              D．How soon

37．-- _________ get your father a watch for his birthday?

--That's not _________．

A．Why not，interesting enough                   B．Why don't，interesting enough

C．Why not，enough interesting                      D．Why don't，enough interesting

36．--Would you mind moving your seat?

--OK．_________．

A．It won't be long                                              B．I'll do it right away

C．Not at all                                                         D．I won’t do it

35．In our exam，the _________ careful we are，the _________ mistakes we'll make．

A．more，more        B．more，less           C．less，fewer            D．more，fewer

34．--What else do you need，Linda?

-- _________ else，I think．We've got enough．

A．Something           B．Anything             C．Everything             D．Nothing

33．--Could you babysit your little cousin?

-- _________．

A．That's no problem                                    B．Thank you

C．Excuse me                                                D．You're welcome

32．Last Sunday Grace had _________ unusual experience．

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

31．--What did your son say in the letter?

--He told me that he _________ the Great Wall the next day．

A．will visit              B．has visited            C．visited                   D．would visit

30．--What _________ if you don't go to school?

--The teacher will be angry with me．

A．should happen      B．are happening       C．will happen            D．happened

29．--What can I do for you?

--I am _________ something to drink．

A．looking for          B．finding                C．finding out             D．working out