They plan   during the vacation.
#50114
A
to go hiking
B
to go hike
C
go hiking
D
going hiking
推荐题目
The policeman did his best to make the baby_______.
#49008
A
to stop crying
B
stop crying
C
to stop to cry
D
stop to cry
Do you prefer _______?
#49119
A
skate
B
skates
C
skating
D
skated