1 . On October 1st, 2024, the People’s Republic of China will celebrate its ________ birthday. (75)

2 . —What’s thirty and fifty?
—It’s ______.

A．sixty

B．seventy

C．eighty

D．ninety

3 . Although my grandfather is in his ________, he is in good health.

A．seventy

B．seventieth

C．seventies

4 . 七十加八十是一百五十。
________ and eighty is one hundred and fifty.

5 . —What is twenty and forty?
—It’s ________.

A．fifty

B．sixty

C．seventy

6 . —The cap is thirty-four yuan and that shirt is fifty-six yuan.
—Oh, I need ______ yuan to buy them.

A．sixty

B．seventy

C．ninety

7 . —There are twenty boys and thirty girls in our class.
—Oh, there are ________ students in all.

A．forty

B．fifty

C．sixty

D．seventy

8 . My grandpa is nearly ________ years old.We will celebrate his ________ birthday next month.

A．seventy; seventy	B．seventy; seventieth
C．seventieth; seventy	D．seventieth; seventieth

9 . —What is ten and forty?
—It is ________.

A．fifty

B．sixty

C．seventy

D．eighty

10 . —What’s thirty and ten?
—It’s ________.

A．forty

B．fifty

C．seventy