--- Do you know _____ Mr. Black’s address is. --- He may live at No. 18 or No. 19 of Bridge Street. I'm not sure of _____. A. what; which B. where; which C. where ; what
—The advertisements on TV are very attractive!—Oh,that’s why the baby is looking _____at the screen and seems to be _______.A.happy,happy B.excitedly,exc