—Jim, who taught ________Chinese before you came to school?—Nobody. I learned it by _______.
A. total B. top C. notice
The full moon often makes her _________ her hometown.A. missing B. to miss C. miss
All the students in my class can’t ______ the math problem. It’s too difficult for us.A. work on B. work out C. work for
My father was watching TV ______ my mother was cooking.A. while B. until C. when
She will call you if she ____.A. goes to B. come back C. comes back