16.—Is the picture put up high enough on the wall?

—_____ .

A.I can’t tell you     B. More or less     C. Just so so     D.I don’t mind

17.I was reading a newspaper          he came in.

A. when            B .while           C. since        D. as soon as

18.—You looked very sad .what’s wrong ?

—My father got badly ill .Now he is in hospital. He can        eat        drink.

A. both; and        B. either; or        C. not; and       D. neither; or

19.—Why do you put the dead leaves here ?

—Oh ,they can _______ the water from________.

A. make; run away                    B. let; running away   

C. stop; run away                     D. keep; running away