19、-----Have you finished your homework?

-----No, I ________ my younger sister all day yesterday．

A．was looking after                                    B．would look after

C．had looked after                                     D．look after

18、“I don’t understand what you are saying,” she said, with a _____ expression on her face．

A．puzzling            B．puzzled         C． puzzle          D．puzzlement

17、I’ll spend half of my holiday practicing English and ___ half learning drawing．

A．another      B．the other        C．others         D．other

16、The wise use that is ____ the limited time has greatly contributed to his success．

A．made of         B．to make of       C．making for         D．made for

15、Mary made coffee ____ her guests were finishing their meal．

A．so that       B although           C．while       D．as if

14、All his friends’ encouragement _____ his confidence in winning the game．

A．added up to          B．added up         C．added to           D．added

13、Mrs. White showed her students some pictures _____ in Paris．

A．to take           B．to be taken          C．taken           D．taking

12、When you arrive home, give me a call to let me know you _____safely．

A．are arriving                                  B．have arrived

C．had arrived                                  D．will arrive

11、Most of us know we should cut down on fat, but knowing such things isn’t much help when it _______ shopping and eating．

A．speaks of           B．refers to           C．comes to         D．focuses on