I used to go camping a lot, so it isn’t the first time I ____in a tent.
He knows several languages ________ English, French and Japanese.
The money collected should be made good use ________ the people in Sichuan Province who suffered a lot in the earthquake.
________ it is to have a cold drink on such a hot day!
Many of them turned a deaf ear to his advice, ________ they knew it to be valuable.
While ________ the dog, you should take care not to ________. Otherwise, it may be dangerous to strangers.