—Have you received Jack’s plan ?
—Yes , but I don’t think his plan is .
| A．worth being considered | B．worthy to be considered |
| C．worthy of considering | D．worth to be considered |
_________he is the son of the boss, he started from the lowest position as a common employee.
| A．Unless | B．Since | C．While | D．As |
Following the guide, we went into a house, _________ wall hung a picture of Einstein.
| A．on its | B．on that | C．on whose | D．on which |
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 |