—How is that, Joan?—Yeah, it’s from the boss. She _________ first, whether she likes it.
| A．shall go | B．ought to have gone | C．should go | D．must have gone |
The Greens seldom go to the concert,________?
| A．don’t they | B．do they | C．don’t he | D．do he |
The shop doesn’t open until 11 a. m.,________ it loses a lot of business.
| A．for | B．or | C．but | D．so |
Most of the Europeans refuse to accept GM food________Americans regard it as the fruit from high tech.
| A．when | B．as | C．while | D．the moment |
Rod is determined to get a seat for the concert________it means standing in a queue all night.
| A．so that | B．however | C．even though | D．as if |
—How can I wake up so early?
—Set the alarm at 5 o’clock,________ you’ll make it.
| A．but | B．or | C．and | D．so |