Bob didn’t go to bed _______ he finished doing his homework. A. because B. until C. however
一I am out of breath. I can’t go any further.一_______! I am sure you can make it.
一Shall we meet at the station at 8 am?—In fact, we _______. The train _______ until l0 a.m.
The cakes in the restaurant _______,so they _______ well.
一Middle school students don’t know much about shopping online, _______ they?一 _______. It’s very popu]ar with teenagers.
The book was written in _______ easy English _______ even primary school students could understand it.