—Look! A book is on the floor. Whose is it?—It ______be Rick's. It has his name on it.

— Shall we meet at the station at 8 a.m.? — In fact we _________. The train _________ until 10 a.m..

—Guess what？I came first in that contest.—Great！You ________ a lot during the past two weeks.

Now that the sign reads, “No person ______ smoke here”, please choose a seat in the smoking area over there if you _______ smoke.

—I ________ speak English in class because I’m afraid of making mistakes. —Don’t be shy. Believe in yourself and everything will be OK.