—I didn’t see you at the beginning of the party last night.—I________on nay biology report at that time.
.— Liu Tao has never read the book The Adventure of Tom Sawyer, _________ he?— _________. He told me it's very interesting. He'd like to read it again.
–––Shall we meet at the station at 8 a.m.?–––In fact we ________. The train _______until 10a.m.
I am sure Cindy will be able to find the hotel—she has a pretty good _____ of direction.
The robber walked ______the street , jumped _____a tall wall and ran away.
–––I can’t find my pen. Can you lend me _______?–––Sorry, I’m using it _______.