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They ______ a small laboratory and devoted every spare moment to this work.

I have ____ Tony to stay away from computer games before he becomes addicted to them.

21. --- Why don’t you like your job ?
--- It’s always being ___by my director .

19. --- Could you tell me how the sea sand comes about ?
--- Sea waves dash against the rock. In this way , the sea sand ___ .

15. We all greatly ___ your cooperation in the building of the power station .

13. The book ___ 50 maps , ___a Chinese map and an American map .

—I came here by taxi and the driver ________ me 50 yuan.
—Really? You ________ by bus.

Jane accidentally       where she had hidden the birthday present for her mother.

In fact, no dictionary can      all the English words and idioms.

30．1 tried to fix the car myself but ______ the attempt after a couple of hours．