从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该选项的标号涂黑。
例：It’s so nice to hear from her again, , we last met more than thirty years ago.
A．What’s more B．That’s to say C．In other words D．Believe it or not
答案是D。
21．Have you read today’s news? The price of houses has slightly gone down.
A．the, the B．不填,the C．the,不填 D．不填，不填
