______ at the door before you enter my room, please.
#70823
A
Knock
B
Knocking
C
Knocked
D
To knock
推荐题目
I can ____ the house being at sixes and sevens, but I hate it if it's not clean.
#82756
A
keep away from
B
get rid of
C
make up for
D
put up with
Sarah，hurry up，I’m afraid you don’t have time to________.
#69552
A
get change
B
get changing
C
get to change
D
get changed
-- Mr. White, will you please teach me how to perform pair skating today?-- . You have to practise single skating well first.
#71430
A
Two heads are better than one.
B
Think twice before you do.
C
Learn to walk before you run.
D
One today is worth two tomorrows.
People often use plastics to ______ wood or metal.
#75376
A
in place of
B
take their place
C
take the place of
D
instead of