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
____ the days he had spent with his American friends, he couldn’t help_____.
#95455
A
Keeping up; smile
B
Staying up; smiling
C
Looking back on; smiling
D
Looking at; to smile
By the time I saw the job ________ in the newspaper,it was already too late.
#89546
A
advertised
B
to be advertised
C
advertise 
D
to advertise
Listen! Do you hear someone __________for help?    
#95859
A
calling
B
having called
C
to call
D
called
________ to sunlight for too much time will do harm to one's skin.
#93531
A
Exposed
B
Having exposed
C
Being exposed
D
After being exposed