( )(2)李老师下午上课的时候可以说: A. Good morning, class B. Good afternoon, class.
_____ you have a nice trip to Beijing? A.Do B.Are C. Did
live with ____ mother and father. A.we B.us C. our
---What are you doing? ---- I am _____ a letter. A.sending B. writing C.Both A and B
What is ____ envelope? A. a B.an C ./
We put the address on _____ right. A.a B.an C.the