Ⅰ.选择填空 从每题Ａ、B、Ｃ、Ｄ四个选项中，选出一个最佳答案。（20分） 1. —What are the boys doing in the river? — They _________. A. are swimming B. are swimming C. swimming D. are swim2. Here is a picture __ my family. There are five people __ my family. A. of, in B. of, of C. for, in D. about, o |
