四、改写句子（本大题共12小题，每小题2分，共24分）
Rewrite the following sentences as required.
61．Adding a suitable tag to the following statement:
I don’t believe you’ve finished knitting that cardigan yourself.
62．Reinforcing the negation in the following sentence:
No one on the committee approved of my proposal.
63．Combining the two sentences by using coordination:
He himself is interested in the subject. All his students are beginning to show an interest in it.
64．Combining the two sentences by using an adverbial clause:
John spoke through a microphone. He could be heard in every room.
65．Combining the two sentences by using a conjunct:
The house was in bad repair. It was to be sold at a reduced price.
66．Combining the two sentences by using a conjunct:
The term papers were very brief. They were better than I had expected.
67．Using extraposition:
Whether there was gold left in the mine was not known.
68．Using fronting:
The plane dived into a large crowd of spectators.
69．Using a modal auxiliary:
I’m sure that he is working late at the office.
70．Using whatever cohesive device is appropriate:
We are told that he will come tonight, and if he comes tonight, our meeting will be held tomorrow. If he doesn’t come tonight, there won’t be any meeting tomorrow.
71．Using whatever cohesive device is appropriate:
I finally threw out my dirty tennis shoes, which pleased my mother tremendously.
72．Using subjunctive mood:
I had recommended him to be placed in a more responsible position.
五、简答题（本大题共2小题，每小题4分，共8分）
Answer the following questions.
73．Give a brief answer to the criteria of the classification of open class words and their significance.
74．List the types of subjunctive mood with examples.
