12.Ma Lili is not 　　　　tall 　　　　her sister .

11.He asked me to stay 　　　　I was .

10.I shall give you my umbrella(雨伞) 　　　　it rains .

9.　　　 　you are very busy ,I shall do the job myself .

8.　　　 　the weather is cold and wet ,you had better put on your coat .

7.We should be always ready to care for others and help our comrades 　　　　Lei Feng did .

6.They didn’t go home 　　　　they had worked out their maths problems .

5.She was so careless 　　　　she made a lot of mistakes .

4.He speaks English 　　　　well 　　　　an Englishman .

3.They went on working 　　　　it was very cold .