You had better _____the flowers now .It’s going to rain .
-Do you know________the meeting?
-Tomorrow morning.
Ann often helps me________math after school.
—Why not________your teacher for help when you can’t finish________the story by yourself.
—Hurry up.It’s almost time for school.—Don’t worry.We are sure to be at school________.
Recycling is good,so don't________bottles or newspapers.