Having a trip abroad is certainly good for the old couple, but it remains _______ whether they will enjoy it. 
#98604
A
to see
B
to be seen
C
seeing
D
seen
推荐题目
Everyone has his or her advantages, and only _______ you do best can help to reach the goal and truly make a difference.
#91859
A
discovering what
B
discovering whose
C
by discovering what
D
by discovering which
Although ________ to stop, he kept on working.
#96110
A
tell
B
telling
C
having told
D
told
I got to the office earlier that day,   the 7:30 train from Paddington
#90663
A
caught
B
to have caught
C
to catch
D
having caught