----Are you happy with this laboratory?
----Not a little. We can’t have _________.
| A．a worse one | B．a nicer one |
| C．such a worse one | D．such a nicer one |
Americans eat____ vegetables per person today as they did in 1990.
| A．more than twice | B．as twice as many |
| C．twice as many as | D．more than twice as many |
The World Wide Web is sometimes jokingly called the World Wide Wait because it ________ be very slow.
| A．should | B．must | C．will | D．can |
, I lost heart in English learning, but my teacher often said to me, “Keep on studying hard , and you’ll succeed.”
| A．At one time; in time | B．At one time; on time |
| C．At a time; in time | D．At a time; on time |
First impressions are the most lasting. After all, you never get _______ second chance to make_______ first impression.
| A．a; the | B．the; the | C．a; a | D．the; a |
---_____that he picked up his uncle at the airport?
| A．Was it when | B．When it was | C．It was when | D．When was it |