78．Lucy(not do)her homework last Friday．

77．The kinds often　　　 (help)each other last year

76．They found the sick boy 　　　　　(1ie)on the floor when they got there．

75．They decided 　　　　(stop)their trip，because it began to rain．

74．Xiao Ming was late yesterday morning and the teacher made him　　　　 (stand)in the hallway for half an hour

73．Do you enjoy　　　　　 　(write)letters in English?

72．Dogs are helpful，we should be 　　　　　to them．

C)用所给动词的适当形式填空。

71．　　　　　 　dislike policemen．

70．一 Do you have 　　　　to drink?　 　-Yes，a little orange juice．

69．Mrs. Green went 　　　　　last weekend and she bought lots of things．