Not until he retired from teaching three years ago _________ having a holiday abroad.
| A．he had considered | B．did he consider |
| C．he considered | D．had he considered |
相关试题
. After class they will discuss the _____ to the study of physics.
| A．approaches | B．means | C．methods | D．ways |
By the end of 2007, about half a million peo
ple had flooded into the city, ____ up around 10 percent of its total population.
| A．make | B．made | C．making | D．to be made |
We must avoid _____ a bad impression on others in public places .
| A．to leave | B．leaving | C．to have left | D．leave |
The ______ boy was last seen ____ near the East Lake.
| A．missing; playing | B．missing; play | C．missed; played | D．missed; to play |
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