从A. B. C. D四个选项中，选出可以填入空白处的最佳选硕，并在答题卡上将该项涂黑。
1. This area experienced ______ heaviest rainfall in ______ month of May.
A. a; a B. a; the C. the; the D. the; a
2. Our house on the hillside ______ a beautiful view of the port.
A. overlooks B. witnesses C. classifies D. betrays
3. It won’t be easy, but we’ll get across the river ______.
A. somewhat B. somewhere C. somehow D. sometimes
4. The house is finished at last. All their hard work has _____.
A. paid back B. paid off C. paid up D. paid for
