.Your son has kept _________ for two hours. You’d better ask him to have a rest.
#51260
A
study
B
studied
C
to study
D
studying
推荐题目
— Do I have to sell my old computer? It almost stops working. — You ________ do so, it only needs ________. Something has gone wrong with it.
#48576
A
mustn’t; to repair
B
can’t; repairing
C
needn’t; repairing
D
may not; to repair
--What’s the matter? --They said I shouldn’t be allowed here. They don’t allow in the waiting room.
#48937
A
smoking; to smoke
B
to smoke; smoke
C
to smoke; smoking
D
smoking; smoking
The purpose of new inventions is _______ life more difficult, but to make it easier.
#48430
A
not make
B
not making
C
not to make
D
do not make
–What did you find in the zoo?–The animals _______ in tiny cages and they could hardly move at all.
#50459
A
keep
B
kept
C
were kept
D
were keeping