Mr Zhang is mild in character. He never shouts ____ he is very angry.
| A．if | B．even |
| C．though | D．even when |
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 |
My arrival was timed perfectly; it was the second weekend of November, when the world largest wine auction ________.
| A．held | B．was being held | C．was held | D．was to hold |
When McKie brings friends or volunteers to the area where she works, most of ________ spend the first day sobbing.
| A．them | B．whom | C．that | D．which |
_______ in the 1800s and first mass-produced in Germany, the harmonica(口琴) was designed to play simple folk tunes.
| A．Being invented | B．Inventing | C．Invented | D．Having invented |
The old scientist has been invited to a party ________ next Monday evening.
| A．holding | B．hold | C．being held | D．to be held |