Which of the two English dictionaries will you buy?——I’ll buy ________ of them, so I can give one to my friend Helen.

Please turn _____ the light when you leave the room.[ ]

The local people like hat restaurant because it ___ both delicious food and good service.

Alice, please tell Eric to call me when he _____ back. –No problem.

As we know, water is very important ______ us. [ ]