Tom went to work late the snowstorm.
Remember to spend some time _____ your loved ones, because they’re not going to be around forever.
I think ____ of the materials I listened to at the beginning of the exam ____ easy.
A little boy wrote _____ “u” and _____“n” on the wall.
--- Why do you often take exercise? --- _____ me keep fit.
--- We went to see the man who was in hospital yesterday. --- __________.