………… morning exercise is good for you.
A. doing
B. studying
C. having
D. playing
Đáp án: A
Dịch: Tập thể dục buổi sáng là tốt cho bạn.
I am having a math lesson but I forgot my ………….. I have some difficulty.
Cuong and Minh …….. their bicycles to school form Monday to Friday.