__________at the door before you enter the office，or you’ll be considered impolite
#65893
A
Knocking
B
Knocked
C
Knock
D
To knock
推荐题目
________ the instructions very carefully when filling in the form.
#65933
A
Following
B
To follow
C
Follow
D
Followed
—Please don’t make a noise. — . I’ll be as quiet as a mouse.
#59368
A
Yes, I do
B
No, I don’t
C
Yes, I will
D
No, I won’t
---- Jack, you ________ the window quickly, will you? ---- Ok! Oh! The window ________ broken.
#65929
A
are shutting; was
B
shut; is
C
have shut; has
D
will shut; has been
＿＿＿for us to surf on the sea in summer!
#66286
A
What exciting is it
B
How exciting is it
C
What exciting it is
D
How exciting it is
Imagine how excited we were ____ that our schoolmates had been admitted to some famous universities.
#65983
A
learning
B
having learned
C
to be learning
D
to learn