Dad, ______ is a call for you.A. have B. there’s C. there
_____ 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