33. It is necessary that whoever ______ recently visited the country ______ this kind of test.

A．has; pass

B．has; passed

C．have; pass

D．has; passes

33. With more and more forests being destroyed, huge quantities of good soil in our country ______.

A．had been washed away	B．has been washed away
C．were washed away	D．are being washed away

Either you or any of your family ______ to attend the important banquet that is due tomorrow.

31.   --______ one and a half days enough for the painting to be finished?
--I don’t think it’s enough and only after _________ go on with it.

30.   It was once called the Sea of Bamboo, but now only one fifth of the area ______ covered with bamboo, and sixty percent of other plants ______ taken the place of the bamboo.

86. The number of people invited __________ fifty, but a number of them __________ absent for different reasons

31. Tom as well as his classmates _____ Japanese in Japan.

25. When a person wants to operate the computer, _____ read instructions first.

The teacher, with 6 girls of her class, ____ visiting a museum when it happened.

19.It is ________ who ____________ wrong.