_________ parents’ complaints, some cities have significantly cut school hours to give children moretime for leisure and play[ ]

Do you know the reason _________ pilots turn off the plane’s lights before taking off? —The practice is for the passengers to adjust to the dark _________ an emergency.

For more information about Britain’s most successful football manager—Sir Alex Ferguson, ________ the book25 years at Manchester United.

What’s wrong with you, Dave—My homework can’t be __________ on time because I’ve left it at home.

When I got New York, I had to attend a school for students first language was not English.