Ответ:

she asked if he could have a dinner with her.

detective asked if they were going to...

mum asked when they went shopping.

Jill asked if she had bought...

dad asked if the weather would be fine...

my teacher asked me how much the DVD cost.

the travel agent asked where they are going tomorrow.

my Granny asked how I got back so late.

my Mum asked why you are going to stay....

the tourist asked where the British Museum is.

обрати внимание в конце точки, а не вопросительный знак!!!