Here are three books on history. Which one would you like to borrow一 ______. You see，I’m interested in geography these days.

_______ does your mother watch the Talk Show—- Once a week.

couldn’t do my homework with all that noise ________．

MrLi, leader of the team, always think of _______ he can do more for his teammates

．______ the satellite launch drawing near, the research workers put their hearts to the test and always stayed up late