单项选择题

Failure is the mother of success. ______ your courage.

A．Keep on
B．Keep out
C．Keep up
D．Keep up with
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单项选择题
Michael Jackson and his songs ______ are famous in the United States are also very popular in many other countries in the world.
A．who
B．that
C．which
D．those
单项选择题
The mother gave the baby a toy ______ in order that she could do her washing.
A．to play
B．to play with
C．to be played
D．to be played with
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