You are wet through. You ___________ in the rain.
| A．must come | B．must have forgotten | C．may catch | D．must have got caught |
It was in the lab _______was taken charge of by Professor Harris ________they did the experiment.
| A．which；that |
| B．that；what |
| C．whom；that |
| D．which；where |
________is it ________has made Peter ________he is today?
| A．What；that；that |
| B．That；that；what |
| C．What；what；that |
| D．What；that；what |
All workers in this factory are required to _______at the age of 60.
| A．resign |
| B．retire |
| C．restrain |
| D．retreat |
(2012年天津卷，2)The letters for the boss _______on his desk but he didn't read them until three days later.
| A．were put |
| B．was put |
| C．put |
| D．has put |
In China，as we all know，brides are often dressed in red as it is a ______of good fortune.
| A．slogan |
| B．brand |
| C．logo |
| D．symbol |