— What does the fresh juice contain?
— ________of the juice ________ orange. It's very pure.
A. Four-fifths; are B. Four-fifth; is C. Four fifths; is
_____mothers both work in the same hospital.
| A．Tim and Peter’s | B．Tim's and Peter |
| C．Tim's and Peter’s | D．Tim and Peter |
In the street I met the professor_______gave us a talk last week.
| A．what | B．which | C．／ | D．who |
-Would your brother go for a picnic this Sunday7
-If I don't go，____．
| A．so does he | B．so he will |
| C．neither will he | D．neither does he |
You must______your cigarette when you are at the gas station.
| A．put down | B．put on | C．put off | D．put out |
Her grandparents are still in good health_____they are over eighty.
| A．though | B．as soon as | C．until | D．because |