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________。

If you _______ go, at least wait until the rain stops.

I rang the doorbell several times but I couldn’t make anyone .

How long have you _________ your watch It looks new.—Only about three weeks.

He ______to swim across the Channel, but they failed because of the terrible weather