Running stars eat ________ healthy food.

The temperature now is much higher than______of 100 years ago because of more and more greenhouse gas.

Grades are really important, but they’re not ______ to us students.

My father often gets up _____ 7:30 _____ the morning _____ Sunday.[ ]

Where is London? I have a pen pal there. —It’s ________ England.[ ]