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
Knowing office rules—whether _____ or not—is critical, especially for young job seekers.
#95058
A
written
B
writing
C
being written
D
having been written
________to the man’s timely coming,the________boy was saved.
#94421
A
Thanking;drown
B
Thanks;drowned
C
Thanked;drowns
D
Thanks;drowning