The book, ____ are true stories about great scientists of the 20th century, is well worth reading.
| A．which | B．what | C．in which | D．of which |
Our teacher will _____ our class a picnic at the riverside tomorrow if the weather permits.
| A．organize | B．order | C．arrange | D．operate |
John complained to the bookseller that there were several pages _______ in the dictionary.
| A．missing | B．losing | C．dropping | D．leaking |
--- Who broke the window? --- I _____.
| A．had | B．broke | C．was | D．did |
It _____ them $300 a year to run a car.
| A．spends | B．costs | C．takes | D．pays |
Much _____ to be settled.
| A．remains | B．remembers | C．forgets | D．leaves |