单项选择题
I had to buy()these books because I didn't know which one is the best.
A.bothB.noneC.neitherD.all
单项选择题 The meal over,the managers went back to the meeting room to()their discussion.
单项选择题 It was()computer games that cost the young man a lot of precious time that he should()on his lessons.
单项选择题 —What do you think of the CD?—().