1. — Who is that man taking ______ lead in the 110-meter hurdles?
— Liu Xiang, ______ famous runner from China.
A. /; the B. the; the C. /; a D. the; a
2. Listen! I’m ______. I’ll call the police unless the damage is paid.
A. cautious B. nervous C. patient D. serious
3. I can remember very few occasions ______ he refuses to offer a hand when needed.
A. when B. which C. what D. why
