问题
选择题
-Has Tommy finished his homework yet?
-I have no idea; he ____ it this morning.
A．was doing
B．had been doing
C．has done
D．did
答案
答案：A
表示今天上午一直在做作业。
搜题请搜索小程序“爱下问搜题”
-Has Tommy finished his homework yet?
-I have no idea; he ____ it this morning.
A．was doing
B．had been doing
C．has done
D．did
答案：A
表示今天上午一直在做作业。