----“Susan, go and join your sister cleaning the yard.”-----“Why ______? John is sitting there doing nothing.”
Mr Ma is the person _____ we learned how to write with brushes.
The _______ boy made the police and his family _______.
He did not go to school yesterday ___________the heavy rain.
Tom has gone to Shanghai,_____ is in the east of China.
__ he is young, he knows a lot.