A. is, is ![]() | B. Is, isn't ![]() | C. Does, doesn't |
A. are, have ![]() | B. is, has ![]() | C. is, can |
A.OK | B.Not | C.Yes |
A.Thank you |
B.You’re welcome |
A.一位警察 | B.一位工程师 |
A.to | B.and | C.with |
A.duck | B.sheep | C.bee |