景观理论体系的形成和发展过程, 大致有__________ ; __________和__________几个阶段。
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__________和__________均属于空间结构。
四大地圈包含_________ ; __________ ; __________和___________。
Why do you think ______ ?
A. is he right
B. he is right
C. he right
D. right is he
Good afternoon. We would like a private room _____ twenty tomorrow evening.
A. for
B. at
C. on
D. to
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