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—Has Tom finished his experiment today? —No idea. He______it this morning.A、is d
—Has Tom finished his experiment today? —No idea. He______it this morning.A、is d
游客
2025-07-21
16
管理
问题
—Has Tom finished his experiment today? —No idea. He______it this morning.
选项
A、is doing
B、was doing
C、had done
D、has done
答案
B
解析
句意:——汤姆今天完成实验了吗?——不知道,他今天上午一直在做。本题考查的是时态的用法。根据题意,题目表达的是Tom今天上午一直在做,需用过去进行时,故B正确。
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