4．-My uncle bought a large house with a beautiful garden last month．
-Oh，it ________ be very expensive．（ ）
-Oh，it ________ be very expensive．（ ）
| A． | must | B． | can | C． | can't | D． | mustn't |
3．---___ you Kangkang？---Yes，___．（ ）
| A． | Are； I am | B． | Are； you are | C． | Are； I'm |
2．---What are these？
---____are apples．（ ）
---____are apples．（ ）
| A． | These | B． | They | C． | Those |
20．用方框中所给的词的适当形式填空，使短文正确、通顺．每词限用一次．
Dear Headmaster，
I'm writing to tell you （96）something important．Nobody likes to be untidy．（97）However，some students throw waste paper and bottles （98）around．We all need a quiet place to stay，but some students often make too much （99）noise at school．Worst of all，some of them are quite rude when talking to （100）others．Everybody knows their behavior is bad，but （101）none of us knows （102）how to stop them．
I think we should make rules to change the situation．Everyone who （103）breaks the rules will be punished．Perhaps it will be hard （104）for us to obey the rules in the （105）beginning，but if everybody does his or her best to follow the rules，our school environment will improve．
Sincerely，
Kangkang．
| none around how However for begin noise other break something |
I'm writing to tell you （96）something important．Nobody likes to be untidy．（97）However，some students throw waste paper and bottles （98）around．We all need a quiet place to stay，but some students often make too much （99）noise at school．Worst of all，some of them are quite rude when talking to （100）others．Everybody knows their behavior is bad，but （101）none of us knows （102）how to stop them．
I think we should make rules to change the situation．Everyone who （103）breaks the rules will be punished．Perhaps it will be hard （104）for us to obey the rules in the （105）beginning，but if everybody does his or her best to follow the rules，our school environment will improve．
Sincerely，
Kangkang．
19．The weather in summer here is cooler than ______ in Beijing．（ ）
| A． | this | B． | the one | C． | that |
18．
Frequent （频繁的） hand cleaning is the most important thing you can do because germs are one of the （81）reasons for being ill．It's especially （尤其） important （82）to clean your hands often during this time of year when germs （83）cause flu，colds and diarrhea （腹泻） to spread （传播） （84）easily by touching other people，and furniture．Remember，clean hands can keep you （85）healthy，so clean them often!
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| cause | health | clean | reason | easily |