我希望天气在今天下午之前放晴。

I hope the weather ___clears ___up before this afternoon.

头两天天气太糟糕了，我们无法到达海滩，但最终天空放晴了。

For the first two days the weather was so bad that we couldn't reach the beach but finally the sky ___cleared ___up.

天气预报说明天会放晴。

The forecast says it will ___clear ___up by tomorrow.