Is Doctor Green ________ ORBIS doctor—No， he is ________UNICEF volunteer. But he sometimes works with ORBIS.

Is Nancy doing her homework — . She is watching TV.

The United Nations has done a lot for the peace of the world since it was in 1945.

Quite the opposite in fact, I like to live ________ much traffic and noise.

There iswithmy kitchen fan. Can you help me—OK, I will check it right now.