71. Sometimes we find her _______ (drive) the tractor on the farm.
72. Li Lei is asking his uncle, an English teacher, _______(help) him think of a foreign name.
73. --- Hi! Li Hong. I didn’t see you at the party.
--- Oh, I was busy _______(get) ready for the coming exams.
74. The old men enjoy _______(listen) to the singing of the birds in the park.
75. The girl _______(stand) under the tree is my cousin Kate.
76. Books _______ (write) in easy English are very popular among Chinese middle school students.
77. Why did you keep your brother _______ (wait) for a long time that evening?
78. I found the door _______(close) when I got home.
79. When they met again, they were too excited _______(say) a word.
80. Through the window, I saw some boys _______(play) basketball.