单项选择题
John Smith, being a diligent student, never refuses to ______ more responsibilities that are assigned to him.
- A．take up
B．take in
C．take off
D．take on
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单项选择题
The Mona Lisa, ______ in Italy, is now in the Louvre, a museum in Paris.
A．who painted
B．who has painted
C．which painted
D．which was painted -
单项选择题
The bird flew upward and dropped the shellfish onto the rock to ______ it open.
A．cut
B．press
C．break
D．shake -
单项选择题
People do not always recall events as they ______ actually.
A．are happening
B．will happen
C．happened
D．would happen
