In the old days, people lived in caves and they had to make a fire _________themselves warm. 
#50642
A
to keep
B
keeping
C
keep
D
kept
推荐题目
– Which is the best way ____ to school?-- By bus.
#49712
A
of getting
B
of get
C
to getting
D
gets
The famous actor planned ______her vacation in the countryside.
#48771
A
spending
B
to spend
C
for spending
D
spent
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