单项选择题

Does it______to let little children play with fireworks

A．make clear
B．make out
C．make sure
D．make sense
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单项选择题
He always did well at school______having to do part-time jobs every now and then.
A．in case of
B．in spite of
C．regardless of
D．on account of
单项选择题
If nothing is done to protect the environment, millions of species that are alive today will have become______.
A．deteriorated
B．degenerated
C．suppressed
D．extinct
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