If you’re leaving your computer for a while, put it on stand-by. You’ll be able to restart it quickly, and it’ll take less energy than shutting it down and then restarting it.
选项：

A: 如果你要离开电脑一会儿,
B: 如果你要离开电脑一会儿,
C: 如果你要离开电脑一会儿,
D: 如果你要离开电脑一会儿,