Don't bother Tom. He is ________ with the experiment on water molecules(分子)in the lab.
A.focused | B.occupied | C.fixed | D.concentrated |
推荐试卷
Don't bother Tom. He is ________ with the experiment on water molecules(分子)in the lab.
A.focused | B.occupied | C.fixed | D.concentrated |
试题篮
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