— You may find the key to the maths problem on page 107.
— Ah, it’s so simple. I wonder why I ______ of that.
A.hadn’t thought | B.haven’t thought |
C.didn’t think | D.wasn’t thinking |
推荐套卷
— You may find the key to the maths problem on page 107.
— Ah, it’s so simple. I wonder why I ______ of that.
A.hadn’t thought | B.haven’t thought |
C.didn’t think | D.wasn’t thinking |