The strike may hold __________ production of cars for several months，__________ a great loss.
| A．out; cause | B．up; causing |
| C．out; causing | D．up; cause |
_____ leaves the room last ought to turn off the lights.
| A．Anyone | B．The person | C．Whoever | D．Who |
Why not seize it _______ you’ve got such a good chance?
| A．now that | B．that | C．where | D．which |
You can’t imagine ______ when they received these nice Christmas presents.
| A．how they were excited | B．how excited they were |
| C．how excited were they | D．they were how excited |
My new pen ______. Who ______ have taken it?
| A．has been disappeared; can | B．has disappeared; could |
| C．is missing; should | D．has been lost; may |
— Can I smoke here?
— Sorry. We don’t allow ______ here.
| A．people smoking | B．people smoke | C．to smoke | D．smoking |