Since then, more than 2 billion apps have been downloaded at prices ________ free to $900.
| A．ranging between | B．ranging from | C．rang between | D．rang from |
Alice received an invitation from her boss，________ came as a surprise.
| A．it | B．that | C．which | D．he |
I have bought two ballpens，________ writes well.
| A．none of them | B．neither of them |
| C．neither of which | D．none of which |
Is ________ some German friends visited last week?
| A．this school | B．this the school |
| C．this school one | D．this school where |
Is there anyone in your class ________ family is in the country?
| A．who | B．who's | C．which | D．whose |
The engineer ________ my father works is about 50 years old.
| A．to whom | B．on whom |
| C．with which | D．with whom |