Middle school students hardly know anything aboutshopping online, ____ they? — ________. It’s very popular withteenagers.

Zhang Yin preferred _____ rather than _____ his friends.

What do you often do _____________ classes to relax?–Listen to music or walk around the school.A．over

I think he is taking an active part in social work.— I agree with you [ ]

k, though I could be mistaken, ______she liked me