All the rings are slightly rounded on their external top and bottom edges to keep the oil

The fire alarms are ringing. You must go to the ________. A.bridgeB.holdC.muster station

She is ill ___A.all the yearB.whole year roundC.all the year roundD.all year round

（To) the （best of) my knowledge, the climate in Arizona is better all （the) （year－round) t

Films could be taken all the year round in Hollywood because ______.A．of the fine weather

All the rings are slightly rounded on their external top and bottom edges to keep the oil

_____ the moon moves round the earth is well known to all of us .A.WhatB.ThatC.WhichD