There’s some litter on the floor. Please ______.
--How about the dishes? --Wonderful ! Nothing tastes________.
- ________ does the bridge made of steel weigh? -About 90,000 tons.
— Why not_______ an English club to practice _______English?
They have _______weeks ________ for the summer holiday than American students.
—Which word can’t describe (描述)appearance(外貌)? —___________.