“I’ve been concerned about your for some time” - the head teacher said in a rather threatening voice.
“I’ve been concerned about your _____________ for some time” - the head teacher said in a rather threatening voice.
A. behavior
B. behave
C. behaving
D. behaved
Đáp án A
Cần một danh từ đừng sau tính từ sở hữu: your + N