单项填空。从A.B.C.D 四个选项中选择能填入空白处的正确答案。
-what`s this_______ English?
---I ________know.
A. on; do B. for; does C. at; doesn't D. in ;don't
单项填空。从A.B.C.D 四个选项中选择能填入空白处的正确答案。
-what`s this_______ English?
---I ________know.
A. on; do B. for; does C. at; doesn't D. in ;don't
D