题文
“Look at these tracks. It _______ be a wolf.” “Don’t be so sure. I think it _______ be a fox.”
| A.must; could | B.may; might |
| C.need; must | D.could; need |
推荐试卷
“Look at these tracks. It _______ be a wolf.” “Don’t be so sure. I think it _______ be a fox.”
| A.must; could | B.may; might |
| C.need; must | D.could; need |
试题篮
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