Having a trip abroad is certainly good for the old couple, but it remains____ whether they will enjoy it. 
#94651
A
to see
B
to be seen
C
seeing
D
seen
推荐题目
 Two years later, her brother disappeared in the war, never ________ again.
#98224
A
hearing from
B
to be heard from
C
to hear from
D
being heard from
The building ______ will be completed in two months. 
#94372
A
painting
B
being painted
C
to have painted
D
painted
One of the most important social problems of today is _____ jobs to the  unemployed.
#98020
A
what to be given
B
having given
C
how to give
D
to have given