—What’s your impression of the Great Wall?
—Wonderful! Once , it can never be forgotten.
| A．seen | B．seeing | C．being seen | D．saw |
相关试题
It is not socially ______ for parents to leave children unattended at that age.
| A．accessible | B．acceptable | C．adorable | D．adaptable |
The best way to deal with complex problems is to _______ them _____ into smaller problems.
| A．break; down | B．break; in | C．break; out | D．break; through |
We were sad to learn that several students were by a car yesterday.
| A．hit out | B．knocked over |
| C．run across | D．picked up |
children believe they can succeed, they will never become totally independent．
| A．If | B．Though | C．Unless | D．When |
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