As environment protection is becoming _______ public concern, _______ government is determined to pay more attention to the issue.
After the long journey, the three of them went back home, ______.
I’m stuck with this problem; you may ask ______ knows better than I.
--Did you invite Kacy to your party? ---I would like ______, but I was too busy and forgot to call her.
Would it be ____for you to pick me up at four o’clock and take me to the airport?
The teacher together with the students_______ discussing Reading Skills that____ newly published in America.