—Where"s his baseball? —I ________ know. [ ]A. am not B. don"t C. isn"t D. a
题型：同步题难度：来源：
—Where"s his baseball?
—I ________ know. |
| [ ] |
A. am not
B. don"t
C. isn"t
D. aren"t |
答案
| B |
举一反三
| Sorry I _______ have a baseball bat. |
| [ ] |
A. no
B. not
C. am not
D. don"t |
| They ________ have a tennis racket. |
| [ ] |
A. aren"t
B. doesn"t
C. isn"t
D. don"t |
| They _______ have color pens. |
| [ ] |
A. haven"t
B. can"t
C. aren"t
D. don"t |
| I ______ have a ball. |
| [ ] |
A. don"t
B. am not
C. isn"t
D. doesn"t |
| Vera ___ know when Jeff"s birthday is. |
| [ ] |
A. not
B. isn"t
C. don"t
D. doesn"t |
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