Personal computers ______ in 1976. It has changed the whole world.
#44711
A
have invented
B
were invented
C
is invented
D
invented
推荐题目
People who drink wine______ to drive.
#44582
A
don’t allow
B
isn’t allowed
C
shouldn’t allow
D
mustn’t be allowed
Don’t worry. Your package here until you come back, so enjoy shopping here.
#44986
A
will keep
B
has kept
C
will be kept
D
has been kept
People should _____ from throwing the rubbish everywhere .
#44661
A
be stopped
B
stopped
C
stop
D
stopping
--- Can I go out and play football with my friends, mum?--- Sorry, my dear. I am afraid you have to stay at home if your bedroom ________.
#44695
A
isn't cleaned up
B
is cleaned up
C
will be cleaned up
D
cleans up