Johnson bought a new car last week, and _______ doubled that of the old one.
| A．which price | B．the price of which |
| C．its price | D．the price of whose |
The rest of the novel very interesting.
| A．were | B．are | C．is | D．seem |
Most of his time in reading novels.
| A．are spent | B．is spent | C．were spent | D．was spending |
Most of the mistakes because of carelessness.
| A．were made | B．are made | C．has been made | D．were making |
Our family a happy one.
| A．is | B．are | C．was | D．were |
The boy sitting by the window is the only one of the students who from the countryside in our school.
| A．are | B．is | C．were | D．was |