题文
---Where is Tom? ---I’m not sure. He _________ football on the playground.
| A.could playing | B.must be playing |
| C.might be playing | D.must playing |
---Where is Tom? ---I’m not sure. He _________ football on the playground.
| A.could playing | B.must be playing |
| C.might be playing | D.must playing |
试题篮
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