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

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

A．fifty

B．sixty

C．seventy

3 . —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

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

A．forty

B．fifty

C．sixty

D．seventy

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

A．fifty

B．sixty

C．seventy

D．eighty

6 . —What’s thirty and forty?
—It’s __________.

A．sixty

B．seventy

C．eighty

7 . —What’s thirty and twenty?
—It’s ________.

A．forty

B．fifty

C．sixty

D．seventy

8 . Tom’s grandfather is ________ (七十) years old this year.

9 . ——你爷爷奶奶多大？ ——我爷爷七十岁，我奶奶六十五岁。
—__________ ___________ ____________ your grandparents?
—My grandpa is ___________ and my grandma is __________.

10 . There are ________ minutes in an hour.

A．fifty

B．sixty

C．seventy