Why not _____ help when you were in trouble?
—__________ have you been in the sports club?—Since the first month I came to the school.
__________ is waiting for you at the gate. He wants to say thanks to you.
The student didn’t find much__________ about the topic on that website.
A lot of foreigners__________ familiar with the famous places of interest in China.
The chemicals in the vegetables and fruit are bad__________ our health.