—Must I show you how to play the game?—Oh,thank you.I______how to do it.
#104363
A
had wondered
B
would wonder
C
was wondering
D
did wonder
推荐题目
I first met your sister ten years ago, when she ____at a supermarket as a salesgirl. 
#102409
A
has worked
B
had worked
C
was working
D
had been working
—Why were you so late this morning? —I _____ in heavy traffic for an hour on the way here.
#101422
A
have been caught
B
have caught
C
had caught
D
was caught
The computer looks old, but it _________ just half a year ago.
#104872
A
has been bought
B
will be bought
C
is bought
D
was bought
 I ____ Mr. White at that time, otherwise I wouldn’t have asked you for some information about him. 
#101527
A
hadn’t known
B
don’t know
C
didn’t know
D
haven’t known