Пж Put modal verbs in the past.
I (can)______________ sing very well last year. *

He (must) _________ finish his homework three days ago. *

She (can´t)__________ take up the job. She didn't have any experience. *

My uncle (can) __________ achieve success in making computer programmes a year ago. *

She (have to) ________ treat her immune system some years ago. *

They (not/have to) ________ go to work yesterday because of the coronovirus lockdown.

I didn´t have choice, I (must) _____ visit my dentist last week. *

By the time she was seven, she (can)_________ already speak three languages *​