The nurse asked me to be a good girl and to sit quietly for 5 minutes.
The wife told her husband not to forget to send her a telegram.
She wondered if I had caught a cold.
They said that they had lunch at the institute.
Peter asked me when it had happened.
She said that she would answer the phone.
The guide told us that the weather was changing for worse.
The pupil said that the earth moves round the sun.

I could sing.(прошедшее)
I will be able to sing.(БУДУЩЕЕ)
You might cross the road here.(прошедшее)
You will be allowed to cross the road here.(будущее)
You had to be quiet.(прошедшее)
You will have to be quiet.(будущее)