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Tom didn’t understand the text ________ the teacher explained it to him.
#58317
A
when
B
while
C
until
D
since
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Kelly Clarkson is so popular among young people _____ her beautiful voice.
#55865
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because
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My sister is only five, but she always tells me ____ my pictures are good or not.
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You should study harder______ it is too late to catch up.
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