He is said ______ to Beijing last week.
Neither Tom nor Jack and I ______his students, but each of us _____ gone to the hospital to see him.
“ They went to the lecture, but it had been put off.” “ Oh, so they _______.”
It’s difficult for him to without a car.
By no means ___to your parents.
We_______on this project for four hours. Let’s have a rest.