Question

—Has Tommyfinished his job yet?

—I have no idea ofit, he ________ it this morning.

1. A.
   was doing
2. B.
   had beendoing
3. C.
   has done
4. D.
   did

Answer 1

A
上文說“湯姆完成他的工作了嗎?”下文說“不知道，又見他今早在工作”。工作的動作發(fā)生在從過去開始持續(xù)一段時間，至于現(xiàn)在完成否，不得而知，但今早他正在干，應該用過去進行時。