Martin was once ________ “problem student”, but now he’s one of ________ top students.
I would rather _____ books than ______ shopping.
—How do you study______a test ?—I study _____working with a group. A for, in B for, by C for, by D of, in
--- How was your report, Sam? --- Not bad, but I need to do better in ______.
---I feel tired and sleepy. ---Why not stop______?
---Where is Miss Wang? ---She went to Hainan Island last week and will return ______ six days.