When _____ about one of the biggest concerns today, many citizens mentioned the sharp rise in housing price.
#88570
A
asking
B
to ask
C
asked
D
having asked
推荐题目
Glass milk bottles can be used again and again, but they need __________ thoroughly, ____they?
#97943
A
to clean, needn’t
B
cleaning,don’t
C
clean, aren’t
D
cleaned, can’t
The people you find most diffcult      can also be your most valuable teachers.
#96326
A
dealing with
B
to be dealt with
C
to deal with
D
being dealt with