—Hi,________Amy!—Hi,I'm Sam!A.I'm B.hello C.good
What ____________ he do?A. doesB. doC. is
He is interested ____________ math. A. onB. inC. at
What's ____________ hobby?A. youB. heC. your
When ____________ your mother born?A. wereB. wasC. is
She was born ____________ 2012. A. inB. onC. at