单项选择题
A.It doesn't matter B.That's nothing C.Good idea D.You're welcome
Shall I get some chalk for you? （）A.Thats right B.No,...
单项选择题Shall I get some chalk for you? （）
A.That's right B.No, thanks, let Tom do it C.I can do it without you D.Not at all
Selecting a mobile phone for personal use is no easy ta...
单项选择题Selecting a mobile phone for personal use is no easy task because technology（）so rapidly.
A.is changing B.has been changed C.will have changed D.will change
Professor White contributed a lot to our community,（）A....
单项选择题Professor White contributed a lot to our community,（）
A.teaching, writing, and lecturing B.teaching, writing, and a lecturer C.a teacher, a writer, and lecturing D.teaching, lecturing, and a writer
