按要求变化下列各句
Lisa was on duty yesterday afternoon. (对划线部分提问)
____ was on duty yesterday afternoon?
The students had a piano lesson last Monday. (改为否定句)
The students ___ ___ a piano lesson last Monday.
Claudia was at the culture club this morning. (改为一般疑问句)
____ ___ at the culture club this morning?
It’s Friday today. (对划线部分提问)
____ ____ is it today?
They were at the office yesterday. (对划线部分提问)
____ ___ they yesterday?