—Has Tom finished his experiment today? —No idea. He______it this morning.

admin2015-04-16  45

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:https://kaotiyun.com/show/1xud777K
0

最新回复(0)