The islands developed on theirown for 80 million years and _______ have many rareanimals found nowhere else.

Lisa in the kitchen when you called her at 5 o’clock in the afternoon.

She won’t go unless________.

在下列句子空缺处依次填入词语，最恰当的一组是①为准备这份提案，两位人大代表走遍了整个地区，________各行各业人士的意见。②人民币被国际货币基金组织确定为国际储备货币，分析人士认为储备货币地位若要能________，需要培育世界级的中国国债市场，以吸引海外投资者。③人类对大自然的每一份破坏，都遭到了相应的报复，“环境”污染的威胁不亚于第三次世界大战，这绝不可________。

48It was great joy_________he received thenews that his long lost son would return home49