I always go skiing with my friends ______ winter.

—Tony, what’s ________ matter with you?    —I have________ toothache.

—I always forget what I want to buy when I go to the market. —Well, you can make a ______ of things you want to buy.

Tom is very short . So he sits _____the classroom .

 －Linyi has changed a lot in the past few years.－Yes. You can see a lot of buildings, trees on ________ sides of the streets.