He must be the captain ______ group got the first prize in the ping-pong game.

okesman did not give out the detailsof the message, saying, “it should not be made public as it is a ______ issue”

It was only when I reread his poems recently________I began to appreciate their beauty.

下列各句中，表达得体的一句是

In the past several weeks, many cities in Northern China from heavy fogs and severe cold