Why are you still waiting here?
Doctor Yu promised to attend the party, but he (not appear).
Mr. Smith bought three of local snacks for the exchange students.(box)
The coldest season of the year is .
Look! How Mark is running!He must win the race.
Don't to turn off the lights when you leave the classroom,Tom.
All right,Ms.Lee.
On school nights,I either do my homework read books.I never watch TV.