题目内容
He was so deep in thought,thinking of the problem ________ he knocked into the tree without noticing it.
| A.when | B.while |
| C.because | D.that |
D
解析 考查状语从句的引导词。so...that...表示“如此……以致……”,引导结果状语从句。句意为:他思考问题太投入了,以致一不留神儿撞到了树上。
解析 考查状语从句的引导词。so...that...表示“如此……以致……”,引导结果状语从句。句意为:他思考问题太投入了,以致一不留神儿撞到了树上。
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