296. What did he say in the letter? 他在信里说什么了?
297. What are you going to do with the books? 你打算拿这些书怎么办?
298. What were you doing when I called? 我打电话给你时你在干吗?
299. I was about to leave. 我正要出门。
300. Can you guess what I was doing this morning? 你能猜到上午我在做什么吗?
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