:单元练习
I.根据词首字母和汉语提示完成单词。
1.The woman has studied English s______ 1990.
2.---Have you heard a______ Lei Feng?
---Yes, of course.
3.The plane has a______ in Tianjin already.
4.In fact, since 1988 ______(工程) Hope has built schools all over China.
5.How long has Lingling ______(认识) Sally?
