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B. found out C. discovered D. invented19. If you like, ____ at any time. A. call on B. drop in C. visit D. pay a visit to20. When they arrived at the crossroads, they went in the wrong ____. A. direction B. ways C. road D. path21. I ____ live in the countryside than in the city. A. like to B. had better C. would rather D. prefer22. The clock ____ twelve and I realized it was late. A. hit B. rang C. struck D. beat23. This science book ____ me a great amount of money. A. took B. cost C. used D. spent24. I ____ you the best luck in the exam. A. wish B. hope C. expect D. want25. He was too excited to ____. A. go to bed B. sleep C. be asleep D. fall asleep26. We are ____ making a plan for the meeting. A. planning B. considering C. thinking D. supposing27. What a nice ____ his coat is! A. clothes B. suit C. fit D. dress28. My trousers are too long. You39。s so welleducated that he will certainly be offered a good ____. A. service B. position C. business D. work30. Green vegetables are ____ in w