Although we’ve learned English for years, we have trouble _____ the       foreigners.
#50181
A
understand
B
to understand
C
understanding
D
of understanding
推荐题目
I prefer ____some shopping to _____ camping since the weather isn’t lovely.
#50099
A
do ; going
B
doing ; go
C
do ; go
D
doing ; going
 If people ________ cutting down the forest, they will have nowhere _______.
#49453
A
keep, to live in
B
will keep, to live in
C
keep, to live
D
will keep, to live
This river is too wide for the swimmers _________. 
#48977
A
to swim
B
to swim across
C
to swim in
D
swimming
 He couldn’t wait_____ home after he finished_____ the movie.
#49977
A
to go, make
B
to go, making
C
going to, making
D
going, to make
Teenagers should be allowed______ their own clothes.
#49099
A
to choose
B
choose
C
chose
D
choosing