The population of many Alaskan cities has ______ doubled in the past three years.
| A．as great as | B．as many as | C． more than | D．larger than |
This is the third time I _______ Beijing. The second time I ______ here was on Christmas Day last year.
| A．have visited; came | B．have visited; have come |
| C．visited; came | D．visited; have come |
Computers can do a lot of things nowadays, but _____ more still need to be done by man.
| A．a large amount of | B．a great deal |
| C．a good many of | D．a great many |
Lectures were _____ so students could be more focused on their study for the finals.
| A．called off | B．broken off | C．blown off | D．set off |
He _____ on the bench, with his head down and his eyes _____ on the ground.
| A．was seated; fixing | B．was seated; fixed |
| C．seated; fixing | D．seating; fixed |
Every year, millions of people visit the Palace Museum, and many of __ are foreigners.
| A．them | B．that | C．whom | D．what |