They go to school ___seven thirty A.on B.about at C.at about D.about

问题描述:

They go to school ___seven thirty A.on B.about at C.at about D.about

选C
具体的时间点 用介词 at
这里是 seven thirty 7:30左右 ,所以是 about seven thirty
at about seven thirty

c. about 表示大约 在几点钟都用at

答案选C.at about