They__________on the program for almost one week before I joined them, and now we ________on it as no good results have come out so far.
| A．had been working; are still working | B．had worked; were still working |
| C．have been working; have worked | D．have worked; are still working |
Peter’s jacket looked just the same as Jack’s, but it cost ______his.
| A．as much twice as | B．twice as much as |
| C．much as twice as | D．as twice much as |
—Why does the lake smell terrible?
—Because large quantities of water_____.
| A．have polluted | B．is being polluted |
| C．have been polluted | D．has been polluted |
Hearing a scream, I rushed downstairs, only ________the hostess lying unconscious on the floor.
| A．seeing | B．having seen |
| C．seen | D．to see |
—Will you go to see the Hollywood blockbuster?
—If you go, _____.
| A．nor do I | B．so do I |
| C．neither shall I | D．so will I |
Put everything _________ to you in your bag , not others.
| A．belonging | B．belongs |
| C．to belong | D．belonged |