19．You can't watch TV          you finish your homework．（　　）

A．

before

B．

if

C．

while

D．

as

18．We don't know _______ the meeting will be held soon．（　　）

A．

when

B．

what

C．

whether

D．

since

17．--I'm worried about my English．
--______ harder ________ you will catch up with your classmates．（　　）

A．

Working； and

B．

To work； or

C．

Work； and

D．

Worked； or

16．I can't go to the cinema with you because I  _______ stay here until my mother comes back．（　　）

A．

can

B．

could

C．

may

D．

must

15．I don't know how to begin a talk with Betty．She can sit all day long _______a word．（　　）

A．

by

B．

with

C．

in

D．

without

14．the，me，invited，she，concert，to（．）She invited me to the concert．．

13．In America when you're given a present，you can open it      ．You don't have to wait．（　　）

A．

immediately

B．

properly

C．

carefully

D．

quietly

12．Li Na won the tennis match in France_______ June 4th，2011．（　　）

A．

in

B．

on

C．

at

D．

for

11．近年来，中小学生健康问题日益引起人们的关注．请你用英语就该问题谈谈你的看法．
要求：（1）内容包括 ①列举中小学生面临的健康问题．
②请谈谈怎样才能保持健康．
（2）字数：60-80词．
（3）短文中不得出现你的真实姓名、学校名和地名．All of us want to be healthy．But most students in China have trouble keeping fit these years．Some students don't have enough time to sleep．Some don't have a healthy diet．A lot of students are too busy to do sports．They always have too much homework to do．
What should we do to keep healthy？Firstly，I think we need about eight hours'sleep every day．Secondly，we should learn to relax．We can do sports every day，such as running and playing ball games．Thirdly，we should eat more vegetables，fruits and less fast food．Of course，there are also some other good ways to keep healthy．．

10．_______ nice hat it is!（　　）

A．

How

B．

What

C．

What a