29 It is necessary that she ______ now. A. went B. should go C. gone D. goes 31 You should have your car ______ before going. A. servicing B. service C. serviced D. to service 32 It is very wise of you ______ after the event. A. been B. be C. to be D. being 85. You can smoke in here ______ you leave a window open to let the smoke out. A. if B. unless C. whether D. until 86. Sylvia won't lend you any money ______ you promise to pay him back. A. provided B. unless C. providing D. as long as 99. I'll have another key ______ . A.to make B.making C.make D.made