题文
Why ________ it get colder when we climb up a mountain? We are getting nearer to the sun!
| A.ought to | B.would |
| C.should | D.must |
推荐试卷
Why ________ it get colder when we climb up a mountain? We are getting nearer to the sun!
| A.ought to | B.would |
| C.should | D.must |
试题篮
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