Lady Gaga has put off her concerts because of the difficulties       by the ongoing strikes.
#89261
A
caused
B
causing
C
to be caused
D
having caused
推荐题目
Because of my poor English I’m afraid I can’t make myself ____.
#97091
A
understand
B
to understand
C
understanding
D
understood
Don’t leave the water ______ while you brush your teeth. 
#94670
A
run
B
running
C
being run
D
to run
The design ________ all the ages and social groups is not easy to make.
#93728
A
appealed to
B
being appealed to
C
to be appealed to
D
appealing to
  People at weekends go walking and _______ in the country, ________”bush”.
#97368
A
camping; called
B
camp; called
C
to camp; calling
D
camping; calling