问题
选择题
---Has Tom finished his composition yet?
---I have no idea, he _____ it this morning.
A．would write
B．has written
C．wrote
D．was writing
答案
答案：D
考查时态。根据语境及时间状语this morning可知用过去进行时。句意：——汤姆完成他的作文了吗？——我不知道，今天早上他一直在写。