She had to ______ their young children by herself after her husband died.
| A．turn in |
| B．go over |
| C．watch over |
| D．take over |
The small fishing village has ______ into a modern city in thirty years.
| A．extended | B．existed | C．explored | D．expanded |
Mr. Keller ______ forty cigarettes a day until he gave it up.
| A．had smoked | B．smokes | C．have smoked | D．smoked |
--- Do you know that man?
--- Not really, just a nodding _______.
| A．acquaintance | B．participant | C．relation | D．frequent |
Please remember _____ wins you respect is not your background but your knowledge and virtues.
| A．that | B．what | C．which | D．where |
I find it astonishing that she _____ treat you like this in public.
| A．should | B．must | C．may | D．would |