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
Students should pay attention to __________ the teacher in class.
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A
hear
B
listen to
C
listening to
D
hearing
The librarian told the readers _________ loudly in the library.
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A
to talk
B
not to talk
C
talk
D
talking
He lost his key. It made him ________ in the cold to wait for his wife’s return.
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A
to stay
B
stayed
C
stays
D
stay