19. The soldiers showed perfect ________(纪律) under the fire of the enemy.
Unit 18
18. Don’t b________ your father. He is trying his best to solve the difficult problem.
17. Do you know that the Polar Bear lives in a cold ________(气候).
16. I was i_________(激励) to work harder than ever before.
15. For a few, ___________(奖学金) were sources of support.
14. He is so d________(不诚实) that he often tell lies. I couldn’t b_______ his lying.
13. Cars on the free way must run above the speed of 70 m______ an hour.
12. People often call one who wins the first place c_______.
11. Monday, Tuesday and Wednesday are w________ while on Saturday and Sunday you can rest.
10. He is c________(快乐) though he is ill.