This is ___that they all want to but it.

She often goes swimming_____ Sunday morning. [ ]

Green economy offers a new model ________ people could both protect the climate and develop the economy, according to what Li said at the International Cooperative Conference on Green Economy and Climate Change.

He was so _____when he heard the _______ news that he got the first prize in the contest.

The box is heavy (重的) ____ him ____ bring.[ ]