A. | B. | C. |
A.It’s OK. | B.Sure. | C.I’m sorry. |
A.Yes, they are. | B.No, he isn’t. | C.No, they aren’t. |
A.talk quietly | B.keep to the right | C.keep your desk clean |
A. | B. |
A. | B. |
A.Keep the desk clean! |
B.Keep to the right! |
C.Keep to the left! |
D.Talk quietly! |
A. | B. | C. |