Many of the creatures in Rowling’s world are not real, and much of____happens is strange．

Tim, do you think time is moneyYes, but I think it is ______ money.

It was five o’clock in the afternoon _____ they climbed up to the top of the mountain.

Middle school students _________ smoke because it is bad for their health.

Newton was playing under an apple tree _______ an apple fell on his head.