用适当的并列连词填空
1.  He couldn't know the truth about me,_____ he wouldn't treat me like this.
2.  The bell is ringing _____the lesson is over.
3. Although he was ill,_____he kept on working.
4.  I can't make up my mind _____we will go to Shanghai ______we will stay in our city.
5.  He doesn't talk much,_____he thinks a lot.
6.  It must have rained last night _____the ground is still wet.
7. The president will visit the town in May _____he will open the new hospital.
8. Jane was dressed in green _____Mary was dressed in blue.
9.  ______ he did not speak distinctly _____I did not hear it clearly.
10. He is clever,_______,he often makes mistakes.
11.  _____ did we write to her ______we called up her.
12. He hasn't any money ______I'm going to lend him some.
13. The child was sick;he,______,didn't go to school.
14. Mary was neither happy,_______was she sad.
15.  Put on more clothes,______ you'll catch cold.

书面表达。