Question

translate the sentences into negative and interrogative. by the time mum came home her con had cooked the dinner. Sandra had been writing a report for three hours before she realized it was too late. This bridge was built in 1953. Tom was reading a very interesting book while his dad was watching a football match.

Answer 1

By the time mum came home her con didin't had cooked the dinner.  

Did by the time mum came home her con had cooked the dinner?

Sandra didn't had been writing a report for three hours before she realized it was too late.  

Did Sandra had been writing a report for three hours before she realized it was too late?

This bridge didn't was built in 1953.  

Did This bridge was built in 1953?

Tom was reading a very interesting book while his dad didn't was watching a football match.

Did Tom was reading a very interesting book while his dad was watching a football match?

Answer 2

By the time mum came home, her con had not cooked the dinner. Had her con cooked the dinner by the time mum came home?

Sandra had not been writing a report for three hours before she realized it was too late. Had Sandra been writing a report for three hours before she realized it was too late?

This bridge was not built in 1953. Was this bridge built in 1953?

Tom was not reading a very interesting book while his dad was watching a football match. Was Tom reading a very interesting book while his dad was watching a football match?