—Has Tom finished his experiment today? —No idea. He________it this morning.A、i

游客2025-07-17 10

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。

转载请注明原文地址:http://tihaiku.com/zcyy/4165583.html

相关试题推荐

随机试题

最新回复(0)

—HasTomfinishedhisexperimenttoday?—Noidea.He________itthismorning.A、i