Loulan is believed __________ over by sandstorms gradually from AD200 to AD400.
#92411
A
to cover
B
to be covered
C
to have covered
D
to have been covered
推荐题目
He had little idea that it was getting so late, _____?
#93241
A
didn’t he
B
wasn’t it
C
did he
D
was it?
—How is it that you know she’s got back from the UK?  —She ____ when I came out of the house this morning. 
#94778
A
seemed to be passing
B
happened to have passed
C
chanced to be passing
D
chose to be passing
The influence of this book might not have been reaching so far, ________for Mr. William, who dared to publish it.
#93440
A
if had it not been
B
is it not being
C
had it not been
D
its only having been
---I have booked my ticket back to Washington. My flight leaves at 9:00 tomorrow morning.---_______.
#94146
A
Is that so?
B
How wonderful!
C
Have a good trip.
D
Well, goodbye.