____ it’s difficult to make her dream come true, she never gives up.

—— Hurry up. The bus is coming! —— Oh, no, we mustn’t cross the street ______ the traffic lights are green.

Her grandparents are still in good health ______ they are over eighty.

 He recorded ________ the chairperson said at the meeting.

I arrived at the airport ________ the plane had taken off.