— Where is Mr. Wang?
— He is not here. He must _______ the students’ papers in the office.
A.correct | B.have corrected | C.be correcting | D.corrects |
相关知识点
推荐套卷
— Where is Mr. Wang?
— He is not here. He must _______ the students’ papers in the office.
A.correct | B.have corrected | C.be correcting | D.corrects |