`8.` I asked Bill what time he had gone to bed the night before

S + asked + (O) + question word + S + V_lùi thì

Quá khứ đơn → Quá khứ hoàn thành

`9.` Paul said that he had to go home then

S + said + (that) + S + V_lùi thì

must → had to

`10.` The policeman said that there was an accident 

S + said + (that) + S + V_lùi thì

Hiện tại đơn → Quá khứ đơn

`11.` The children said that they were waiting for the school bus

S + said + (that) + S + V_lùi thì

Hiện tại tiếp diễn → Quá khứ tiếp diễn

`12.` Mr Brown asked me if I had to go then

S + asked + (O) + if/ whether + S + V_lùi thì

must → had to

`13.` Tom asked me if I was going to visit my aunt the next day

S + asked + (O) + if/ whether + S + V_lùi thì

is/ am/ are going to → was/ were going to

`14.` The teacher told me to listen her and not to make noise 

S + told/ asked + O + (not) + to + V_inf