首页 > 29. On March 12, the students were planting trees ____ the classroom. A．in the back ofB．at the back

29. On March 12, the students were planting trees ____ the classroom. A．in the back ofB．at the back

题目简介

29. On March 12, the students were planting trees ____ the classroom. A．in the back ofB．at the back

题目详情

29. On March 12, the students were planting trees ____ the classroom.

A．in the back of

B．at the back of

C．to the back of

D．on the back of

题型：单选题难度：偏易来源：不详

答案

B

略

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