—Jane, I saw your brother yesterday.
—It ________ be him. My brother is studying in Shenzhen.
can’t
mustn’t
needn’t
Great changes __________ in our school in the past few years .
There __________ a big tree in front of my house . I could hear many birds sing in it .
Germany is __________European country and Korea is __________Asian country.
---Can you please tell me ___ ? ---It’s a quarter to eight.
Hello,boys and girls, please help ___ to some fish.