Today's weather forecast is rain

1. The weather forecast said that there will be light rain today, and it will rain in the afternoon (as expected).

His idea is reasonable, but I'm afraid it's difficult to realize.

Sudden: refers to the situation happening quickly and unexpectedly.

Of course: approval is right, yes and although. Often used with but and but.

Sure enough: it means that the facts are the same as what you think and say.