例:Look at Mary. What ? (B)
(A)does she (B)is she doing
(C)she is doing (D)does she do
1. John is university student.
(A)some (B)any (C)a (D)an
2. That table is made of .
(A)a wood (B)some wood (C)the wood (D) wood
3. Tom a letter to his parents last night.
