英语题目 高手请进

21. _________ when you get back, please do wait for me.
A. If you won’t be here B. Won’t you be here
C. Should you not be here D. If you were not here
22. The conference has been held to discuss the effects of tourism _______ the wildlife in the area.
A. in B. on C. at D. with
23. As we join the big crowd, I got ________ from my friends.
A. separated B. spared C. lost D. missed
24. In the dark street, there was not a single person ________ she could turn for help.
A. that B. who C. from whom D. to whom
25. Prices of the electric equipment in the supermarket ________ from 5 dollars to 10 dollars.
A. lined B. ranged C. arranged D. reached
26. If it had been possible, I would have helped her, but I ______ too busy.
A. has been B. was C. had been D. would been
27. The plant is dead, I _______ it more water.
A. will give B. would have given C. must give D. should have given
28. They demanded that th

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