You can’t imagine the difficulty he _____ onto the cliff and saving the boy in trouble. 
#103306
A
had to climb
B
had climbed
C
had climbing
D
had on climbing
推荐题目
By the end of next September, the university ______ 200,000 graduates.
#101412
A
have turned out
B
will turn out
C
will have turned out
D
had turned out
 It ________ we had stayed together for a couple of weeks _________ I found we had a lot in common. 
#103079
A
was until; when
B
was until; that
C
wasn’t until; when
D
wasn’t until; that
—Why not find a new job?—Why should I? I _____________ as much,but I like what I'm doing.
#99236
A
didn't earn
B
don't earn
C
hadn't earned
D
haven’t earned