What about       hiking       the mountains?
#50788
A
go, in
B
to go, to
C
going, in
D
goes, to
推荐题目
I want ___ a policeman because it is an exciting ____.
#51250
A
to be , job
B
doing , work
C
to do , job
D
be , work
I try ___ a lot of vegetables.
#50912
A
to eat
B
eating
C
eat
D
to have eating
She’ll spend as much time as she can      to improve her spoken English. 
#48523
A
speak English
B
to speak English
C
speaking English
D
speaks English