23.I suffered from _____ terrible cold that day and my friends told me to go to _____ doctor’s after work.

13.John _______ me he was going to help me with my English.

16.现代学制最早出现在欧洲，于19世纪末初步形成，下列属于单轨学制的国家是（ ）。

7.“骤变与适应” 是教师专业发展哪一阶段的突出特点？（ ）

47.Scarcely had we arrived at the farm when we spotted many oranges hang from the branches. 

5. Why the explosion occurred was ________ the laboratory attendant had been careless．

28. Mr. Harrison was finally employed by the company because his ability and work experience could ________ the position perfectly.

21.—Will you have a second child?—Haven’t decided yet. We ________ about it the whole year.

26.—Have you started writing your report?—Not yet. I _______ a hard time getting the information.

15.Great changes ______ in my home town and a lot of factories ______.

14.The _______ of the Titanic was found in September 1985, but recovering it is a very difficult prospect.

41.I have no alternative ______ to arrive late.