Had they known what was coming next, they ___________ second thoughts.
| A．may have | B．could have | C．must have had | D．might have had |
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 |
Thanks to the environment－protection policy,our living conditions have been greatly________.
| A．increased | B．improved | C．developed | D．grown |
Do you know even the ordinary things can ________the most breathtaking stories?
| A．show | B．describe | C．tell | D．say |