Before Chinese Chang’e-2, the US sent up a space probe (探测器) to hit the moon to see ______.

Ted came for the weekend wearing only some shorts and a Tshirt，________ is a stupid thing to do in such weather.

Have you _____? — No. I had the wrong number.

We can use WeiChat to chat with each other.–Really Will you please show me __________ it.

Allof them try to use the power of the workstation ___ information in a moreeffective way.