第 24 课

(C) 71. Help ______ to some fish, my boy.
---Thanks.
A. you               B. yours           C. yourself
Fish n. 鱼肉 不可数
Fishes 鱼的种类 可为复数
Help oneself to 请自便

(C) 72. College students are old enough to teach ______.
A. them          B. their         C. themselves          D. they
College n. 专科性学院 University n.综合性大学
Enough adj. 足够的 名前形后
Teach oneself 自学

(B) 73. David talked with a friend of ______ on the Internet for a long time yesterday.
A. he        B. his        C. him     D. himself
Talk with somebody 与某人交谈
On the internet 在网上