Where was it you our maths teacher?A. where; came to B. that; come acrossC. that; came a

问题补充：

Where was it you our maths teacher?

A. where; came to

B. that; come across

C. that; came across

D. where;come to

答案：

A. where; came to

B. that; come across

(答案→)C. that; came across

D. where;come to

解析：本题考查强调句型和come短语。将was it 去掉后，剩下Where you our maths teacher意义和句式依然完整，故该句是强调句型，第一个空用that。come across偶然碰到。