用括号内所给动词的适当形式填空。 小题1:Eighty students have entered the writing competition since it __________. (hold) 小题2:Girls, ________ (not be) nervous about speaking English. 小题3:His bike ______ ( break) down when he went to work yesterday. 小题4:I think more money ______(need) to carry on with our work. 小题5:The oil price________(rise) a lot in the past ten months. 小题6:While they _________ (prepare) for the exam tomorrow, the door bell rang. 小题7:It is important __________ (not feed) your goldfish too much food. 小题8:My teacher told me that light ________ (travel) faster than sound. 小题9:They were heard ______ ( sing) in the room just now. 小题10:The report says some animals can ________ (make) to work for people after training.