61. His office on the fortieth floor of a skyscraper in the center of New York City is the place ____.
A. that he works B. which he works C. he works in D. he works
62. ______ has recently been done to improve the conditions of elementary schools, a great number of children are unable to go to school.
A. That B. What C. In spite of what D. Though what
63. You’ve switched the machine off. I told you not to, _____?
A. didn’t I B. haven’t you C. will you D. did I
64. £­Since you can't find a better job, why don't you stick to the present one?
£­Well, _____.
A.I believe not B.I don't care C. Never mind D. I might as well