Look!Theboyissinging
问题详情：
Look! The boy is singing _____________ the classroom.
A. in front of B. in the front of C. at the left D. on front of
【回答】
B
知识点：介词和介词短语
题型：选择题
问题详情：
Look! The boy is singing _____________ the classroom.
A. in front of B. in the front of C. at the left D. on front of
【回答】
B
知识点：介词和介词短语
题型：选择题
