问题
Where is Mr. Wang— He is not here. He must _______ the students’ papersin the office.
A:correct
B:havecorrected
C:be correcting
D:corrects
B:havecorrected
C:be correcting
D:corrects
正确答案是：
同类题型
Upon into the blue sky ______ when we passed by its nest.
I seldom ______ TV ____ the evening.
When you are in the lab, you should ___ teachera’ instuctions.
My stomach ______ meI thought it was going away, but now it’s getting worse and worse
I can’t find my purse anywhere.—You __ have lost it while shopping.