.Professor White has received a letter ___ to give a lecture in Peking University.
It was at 8 o’clock ________ I went back home last night.
Excuseme,butcanyoutellme________?
It seems ________ our team is going to win.
I ________ watching television; let’s go for a walk.
— I beg your pardon? I can’t follow you. —________.