It’s quite_____me why such things have been allowed to happen

Susan’s birthday party was ________successWe sang and danced until it came to ________ end at ten

________ to use in April, 2010, the road has solved the long-standing problem of traffic jamsof this area.

It is dangerous to make the little boy ____ at home by himself.

The accident happened on such an evening with strong windsby heavy rain.