lt was his positive attitude to life and hard work _________finally led him to his successful career .

because it solved a lot of problems between the two sides

__________is it from your school to the park— 30 minutes’ walk, I think.

_____ achievement, last week’s ministerial meeting ofthe environment here earned a low, though not a failing grade.

The students entered the classroom，smiling and________，and ______ down to have their lessons.