He felt like________in the sky like a bird.

ilway was opened＿＿＿＿＿＿traffic＿＿＿＿＿＿＿ April 4, 1985.

Failure can make a positive contribution to your life _______ you learn to use it

Is the girl in red your friend —_________. She is learning Chinese now.

Look! _____ workers are making bicycles. They made five _____ bicycles in all.