1. _______ it was rather difficult according to some experts, the website succeeded in helping a man restore his lost memory.
A. Unless B. Once C. As though D. While
2. Word spreads that Liu Fang_______ concerts every day since last month.
A. performed B. had performed C. performs D. has been performing
3. I like the concert atmosphere____ I can forget my problems and get totally relaxed.
A. where B. that C. when D. which
4. The soft music reminded me of my poor childhood. Then tears _______my eyes.
A. scalded B. enticed C. shrank D. attained
5. When ______ in the classroom, you should never get angry, as your classmates are just playing a joke on you.
A. tease B. teases C. teasing D. teased