Don't _____ the news to the public until we give you the go-ahead (许可，准许).
| A．release | B．discard | C．relieve | D．retain |
—Will you go to the party tomorrow， Xiao Hai？
—No, ____ I was invited to.
| A．as long as | B．so far as | C．as if | D．even if |
Only when the firefighters put off the firewhat great damage it caused.
| A．we had realized | B．had we realized | C．we realize | D．did we realize |
—Is there any possibilityyou could pick me up at the airport?
—No problem.
| A．when | B．that | C．whether | D．what |
While watching television，____．
| A．the doorbell rang | B．the doorbell rings |
| C．we heard the doorbell ring | D．we heard the doorbell rings |
To good relationships with your teachers and classmates, you should learn to be on good terms with them.
| A．bring up | B．add up | C．keep up | D．take up |