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
—Look, where are you going!—Sorry, I _______.
#100564
A
wasn’t noticing
B
didn’t notice
C
haven’t noticed
D
am not noticing
. She insisted that she ______ somebody in the house.
#103816
A
should hear
B
heard
C
hear
D
was heard
Ladies and gentlemen, please fasten your seat belts.The plane __________. 
#101135
A
takes off
B
has taken off
C
is taking off
D
took off
Among all the birthday gifts ______ a DIY card, which I like best. 
#100914
A
is included
B
include
C
were included
D
including