Many people believe that _______ will takes years to develop a car that does not pollute the air.
| A．it | B．that | C．there | D．this |
British scientists have produced _____ they believe is the world's smallest Christmas card．
| A．which | B．who | C．that | D．what |
All of us have the desire to visit the three main temples in Athens, especially ______ that contains a gold and ivory statue of Athena.
| A．the one | B．one | C．the ones | D．those |
Canada, _____ second to Russia in size, is _____ home of all kinds of animals and plants, making it famous for its natural scenery.
| A．/; a | B．the, the | C．the, / | D．/ ; the |
---Have you finished all your exercises?
---Yes, ___ is left. As a matter of fact, they are as easy as ABC.
A. nothing B. not one C. none D. neither
Nowadays people take___ exercise a day as they did in the past because of widely used automobiles.
| A．less than half | B．less than as half as |
| C．less than half as much | D．half less than |