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
He found the manager _____ by letters and papers and _____ very worried.
#94682
A
surrounding; looked
B
surrounded; looked
C
surrounding: looking
D
surrounded; looking
He did nothing but ________walk in the street. 
#95370
A
taking    
B
take    
C
to take    
D
took