The Netherlands is the only country in Europe which permits euthanasia, ________ it is not technically legal there.
正确答案： C
本题解析：
本句的意思是“虽然荷兰是欧洲唯一允许安乐死的国家，但是安乐死在荷兰严格说来并不合法” ，所以应该填 although。
The house was quiet in the night, ________ the occasional coughing from my throat.
________ in thought, he almost ran into the car in front of him.
By the middle of the 21st century, the vast majority of the world ’s population will be living in cities _______ in the country.
The government called out policemen to suppress the riot.
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