1. 那時(shí)他正在努力算這道數(shù)學(xué)題。   
     He was trying hard to                   this math problem at that time. 
2. 史密斯先生說話很慢以便學(xué)生們能夠聽清楚。
     Mr. Smith speaks slowly                   the students can hear him clearly.   
3. 今天天氣很好，為什么不去散步？
    It's fine today._         ____go out for a walk? 
4. 你最好不要過分依賴父母，要學(xué)會照顧自己。   
   You'd better not        too much        your parents, and learn to look after yourself.    
5. 對不起，剛才我錯(cuò)拿了你的傘。
   Sorry, I  took your umbrella                  just now.
6. 昨天你發(fā)生了什么事？  
   What        you yesterday?
7. 乘電梯到二樓，向右拐。  
            the elevator         the second floor and turn right.
1. work out   2. so that   3. Why not   4. depend,on  5. by mistake   6. happened to  7. Take;to
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