伯肯黑德（英格兰西北部一城市）...

They were constantly on the alert not to be taken by surprise.他们一直处于常备不懈状态以防突然袭击.Every stray dog has to be taken by its finder to the police.发现走失的狗后都应将它带到警察局。This test is to be taken by all pupils without reference to ag...