---Sorry, Professor Smith. I didn’t finish the assignment yesterday.---Oh, you___________ have done it as yesterday was the deadline.
-Did your uncle fly to Paris directly? -No,he travelled from Hong Kong _____ London.
-My mathematics is very poor. -Don’t worry. I’ll help you ______ I can.
-If you have time tonight,I’d like to invite you to a ball. -That’s very nice of you,but are you ____?
How pleased the detective was _____ what his customer told him
-What did you think of ______ president?-I didn’t care for him at first,but after ____ time I get to like him.