1. — Hello! I’d like to speak to Mr. Watt.
— _____. He is coming.
A. At your service B. No problem
C. Hang on a minute D. I’m sorry
2. Mark Twain, _______ world-famous writer, lived _______ adventurous life when he was young.
A. the; the B. a; an C. a; the D. the; an
3. Although he was against my plan, he didn’t _______ one of his own.
A. solve B. establish C. notice D. present
