4. The store owners in the neighborhood have been...................about the new mall for a few months. *
A. interested
B. excited
C. surprised
D. concerned
5. He hid that letter in a drawer..................no one could read it. *
A. because
B. so that
C. although
D. when
6. Excuse me! I’m doing my homework................turn down your radio a bit? *
A. Would you like
B. Why don't you
C. Could you
D. Would you mind
7. You’re always at home. You................go out more often. *
A. should
B. can
C. must
D. ought