No matter , you must follow the school rules.
—What do you________ the TV series?—It is________. I’ve never seen such a better one before.
—Look! That man looks like Mr. Brown.—-It _______be him, for he _____to America.
— Did you watch the opening ceremony (开幕式) of the Nanjing YOG?— Yeah. It was _____on CCTV and Jiangsu TV.
— Why didn’t you go to the cinema with John last night?—_____I had lots of homework to finish.
—Do you know Robert? —Yes, He is__ university student. He likes sports and runs for ___ hour every morning. A a; a B a; an C an; an D an; a