. —You must _____ a letter to your mother tomorrow.—Well, I will, Dad.A. to write B. write C. write to
The ______ at this time is very busy. There are too many cars on the road.
I hear that Tom will be back _______ a month.
Doing sports is good for your health, _______ ?
––Would you mind _______ the music? Your grandpa is sleeping. ––Sorry. I’ll do it right away.
––_______ have you been a volunteer? ––Since three years ago.