— ______ do you spell your name?— T-I-N-A.A. What B. HowC. What’s D. Who
--- Mr. Green, I think physics is too difficult for me. ---Tom, work hard, _______ you’ll find it not as difficult.
--- Listen! David is talking happily with his mother in the next room. --- It ______ be his mother. She has gone to Yunnan to be a volunteer doctor.
--- Have you got the e-mail I sent you this morning? --- I found an e-mail in my mailbox, but it wasn’t ______ you.
—Would you please help me with my drawing?—_____. You can come to my workroom every Saturday.
—Do you mind my closing the window? .—_____. It’s much too noisy outside.