As a result of destroying the forests, a large ________ of desert ________ covered the land.
| A．number; has | B．quantity; has | C．number; have | D．quantity; have |
Mr. Keller _________ forty cigarettes a day until he gave it up.
| A．had smoked | B．smokes | C．have smoked | D．smoked |
—Excuse me, can you spare me a few minutes?
—_________?
| A．What’s on | B．What’s up | C．What is it | D．What’s more |
Those farmers who _________ move from place to place with their animals in the past have moved into new houses at last.
| A．could | B．might | C．would | D．should |
_________either the twins or John going with me when the play _________here?
| A．Is; is put on | B．Are; is put on | C．Is; is put up | D．Are; is put up |
The man had expected to see all his relatives when in hospital, but _________ came to see him while many of his friends offered him their help.
| A．none | B．no one | C．someone | D．anyone |