单项选择题
Shall we go to the zoo tomorrow?（）
A.It doesn't matter B.That's nothing C.Good idea D.You're welcome
单项选择题 Shall I get some chalk for you? （）
单项选择题 Selecting a mobile phone for personal use is no easy task because technology（）so rapidly.
单项选择题 Professor White contributed a lot to our community,（）
