So far, the moon ________ by man already.  
#38542
A
is visited
B
will be visited
C
has been visited
D
was visited
推荐题目
It’s 8 o’clock in the evening. Tom ______ TV.
#39662
A
watch
B
watches
C
watching
D
is watching
—Have you ever ________ to the Great Wall? —Yes, I _______ there last autumn.
#41721
A
gone; went
B
gone; have been
C
been; went
D
been; have been
 The old people ______lonely at all since we began to visit them once a week.
#42516
A
haven’t felt
B
hasn’t felt
C
didn’t feel
D
don’t feel