—Where’s your mother, Helen?—She_________ the flowers in the garden.

The wallet must ________ LiLei’s. Look! It has his ID card in it.

----Must we clean the classroom now?----No, you _________. It _________ after school.

Try to give its meaning when you meet a new word. Don’t _____ your dictionary all the time.

The river smells terrible. People must_____ dirty things into it.