It is you as well as your wife that ______ your son’s bad performance at school.

_________that we will _______free computer training during the holidays

I wonder what happened ______ my mother. I haven’t heard _____ her for nearly a month.

She sold out everything she had to see heridol in Hong Kong. How_________she acted!

Several years ago, very ______ people knew Yao Ming .But now he is well-known all over the world.