---- Let’s go shopping at the new mall. ---- Why not shop on line? It’s _________. A. less expensive B. expensive C. more expensive
— You should go over your test paper ________ you hand it in. — OK, Mr. Wang.
— Let’s go hiking _________ staying at home, shall we? — Good idea.
— ______ is the library from our school? —It’s quite near. Just go ________ the road.
— Can you tell me ____________? — It happened at 3:00 pm.
— TV was invented in _________ century. — Is that true?