It is said that bad living habits as well as dirty surroundings, stuffy rooms and some other factors ________ the wide spread of H1N1.
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It’s already 10 o’clock. I wonder how i____________that she was two hours late on such a short trip.
| A．came over | B．came out | C．came about | D．came up |
_______ what would happen, none of them could find a way out.
| A．Left wondering | B．Having left wondering |
| C．Leaving to wonder | D．Having left to wonder |
Students who pass the test will be ______to the next grade, as has been announced.
| A．possessed | B．promoted | C．proposed | D．allowed |
The present financial crisis has put the world economy in a difficult____________
| A．occasion | B．case | C．background | D．situation |
. Now, the world’s focus is all on Shanghai ______ the 2010 world Expo is to be held.
| A．when | B．whose | C．where | D．that |