Not until the press reported the pollution _________ why the water supply had been cut off.
| A．people did know | B．people had known |
| C．did people know | D．had people known |
相关试题
Jenny, hurry up, I am afraid you won’t have time to _______before the party.
| A．get changed | B．get change | C．get to change | D．get changing |
------No.3 player runs quite fast.
------Yes, but there’s no doubt _____ Liu Xiang will win in the end.
| A．that | B．whether | C．if | D．when |
. My friend is a heavy smoker. After he left my house last time, all my house _______.
| A．smelt terribly | B．smelt terrible | C．smelt badly | D．smelt nice |
We hadn’t seen each other for years and he had changed a great deal, so I didn’t _______ him at first.
| A．realize | B．repeat | C．know | D．rec ognize |
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