Recently I bought an ancient Chinese vase, _______ was very reasonable.
| A．which price | B．the price of which | C．its price | D．the price of whose |
. Every boy and every girl as well as some teachers who ___ to visit the museum _____required to be at the bus station at 6:30.
| A．are ; is | B．are ; are | C．is ; are | D．is ;is |
I’ll never forget such an attractive city ___ I spent many happy hours there with my classmates last summer holidays.
| A．that | B．where | C．in which | D．because |
______ , I think , and the problem could be settled.
| A．Making great efforts | B．So long as you keep up your spirits |
| C．If you double your efforts | D．A bit more effort |
At home, he keeps some pets, to which he _____ all his spare time.
| A．spends | B．offers | C．devotes | D．provides |
. ___ Mr Morgan appears extremely cheerful in public, he is in fact leading a very unhappy life.
| A．While | B．When | C．As | D．Since |