皮肤移植术包括()
A．游离皮片移植术
B．皮瓣移植术
C．表皮移植
D．自体表皮移植
参考答案：A, B, C, D
Paul, please take these books to______math teacher.He needs______. [ ]
A. our; them
B. we; it
C. our; they
D. us; them
