— Can you lend me the book Gone with the Wind? — Sorry. I returned it to the library just now. Maybe it is still ____.
—Could I surf the Internet for twenty more minutes, Mum?—Oh, dear, if you________.
It’s inner beauty, in my opinion, rather than physical beauty, ____matters in the long run.
—Cathy, what are you going to do this weekend?—________, I’m going to see my parents in the countryside.
According to our school rules, students ________ not carry mobile phones when taking a exam.
Food safety has become a growing concern. Had the offenders been punished severely enough, the situation________ different now.