当你想跟李珊通话时，你应该说：
A.May I speak to Li Shan,please? B. Are you Li Shan?
I enioy______and playing football after school.
A.swim B. to swim C. swimming
—Please return it______two weeks.
A.at B. in C. at
We know trees are ______friends.
A.peoples B. people’s C. peoples
I am a ______here .
A.visit B. visited C. visitor