—Will you go to Nanjing by bus _____ by plane?—By plane. It is expensive ______ fast.
You’ll fail the exam _____ you work hard.
—Excuse me. Do you have a table for two? —I’m sorry, _____ there aren’t any seats now. Would you mind waiting a while?
It’s five years _____ our teacher came to Jiangyan.
You can’t go back home______you finish your homework.
Study hard, _ _ you will pass the exam.