Be sure _______ when you enter the cave. Otherwise, you’ll hit your head on the rocks.
#53929
A
to bend
B
bends
C
will bend
D
bending
推荐题目
Andrew always keeps _________ new books.
#57713
A
choosing to read
B
chose to read
C
chooses to read
D
choosing reading
—That’s my pen. Please ____.   —OK.
#59305
A
give it to me
B
give me to it.
C
give it me
D
give me it
 We can't ______ making a plan. Clean-Up Day is only two weeks from now.
#59159
A
put off
B
put up
C
put away
D
come up with