Must I go to medical school and be a doctor like you,Mom—No, you__________, son. You’re free to make your own decision.

填入下面一段文字横线处的语句，最恰当的一句是（ ）太阳照耀大地，没有阳光人类不能存活。 。维生素D对调整人体内钙和磷的含量至关重要，并且可以预防佝偻病等疾病。如果没有直接供给，我们的身体就必须利用自身物质“制造” 维生素D．这些物质可以从鲑鱼和鸡蛋等食物，或者从我们的皮肤中以胆固醇新陈代谢衍生物的方式得到。而在这些物质有效地转变成维生素D的过程中起至关重要作用的恰恰是紫外线B。

Mr. Wang is ______ his wife in social standing地位, because his wife has made more contributions to our society than he has.

Excuse me, I want tohave my watch fixed, but I can’t find a repair shop.—I know one nearby.______I’ll show you.

He was seriously ill. That’s he didn’t appear at the party.