he limited supply of water has beenput into practice, take care to turn off the running ____ before you leave.

I’m new in Wuxi. — Take a map of Wuxi with you. You’ll find it of great ________ in helping you to get round Wuxi.

Education _______ white settlers only in Australia in the past. The natives could not go to school.

Shirley, a real book lover, often brings home many books to read __________ the library.

Every time _____ he thought of his past, he couldn’t help bursting _____.