_____ Blacks are going to the park. Why don’t we go for _____ walk, too?
Heilongjiang is in the _______ of China.
Your digital watch is quite nice. Where did you buy_____?I want to buy_____,too.
At the foot of the hill you could hear nothing but the_______ of the running water.
— Aren’t Sam and Helen in Class Three? — _______.
Sam with his friend Helen _______ in Class Three. They are in Class One.