Must I answer it in English?—No, you _______. You can use Chinese.

Be careful!. We must _____ play on the street.

Do you know the boyis sitting next tu Peter?–Yes, he is Peter’s friend.They are celebrating hisbirthday.

Do you know the boy________ is sitting next to Peter? — Yes. He is Peter’s friend. They are celebrating his ________ birthday.

We like the man ________works very hard and helps others very often.