There are _________of nurses in our school but only _______of them are boys.

He____know the answer, but I’m not sure.

Mr. Smith works with a mobile phone company, but he _____________ for this international meeting, since he is on holiday.

Who is the boy over there?—It’s ______ brother.

Excuse me, sir. ______ is it to the nearest hotel?—About 15 minutes’ walk along this road . [ ]