1.that , travels
2.if/whether,would be
3.if/whether they can speak
1.if/whether,are playing
2.if/whether she had finished her
3.how many people you can see
my teacher told me that light travels faster than sound.
Jack didn't know that there would be a meeting in five days .
I want to know if they can speak French .
tell me if the children are playing games .
Mr.Zhao asked Ma Gang if he had finished his homework yet .
who knows how many people you can see in the picture.
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