（
D
）1. Who do you work ______?
A. at
B. in
C. to
D. for
（
C
）2. — Is that you, Mary? — Yes, ______.
A. speak
B. speaks
C. speaking
D. spoke
（
B
）3. I don't know what you are talking ______.
A. to
B. about
C. with
D. of
（
A
）4. Mr. Turner will ______ stay at the office.
A. have to
B. must
C. has to
D. need
（
C
）5. He wants to know ______ yesterday.
A. what did she do
B. what she do
C. what she did
D. she did what
（
A
）6. The teacher wants to know ______.
A. if you like English
B. if do you like English
C. you like English
D. do you like English
（
B
）7. Sam was late ______ school yesterday.
A. to
B. for
C. in
D. at
