下列各句中加点成语的使用，全都正确的一项是（　 ）①我们让人欺负够了，全国百姓谁不愿打！岂不哀兵必胜啊！②从宏观来看，人们所关心的大多数问题都可以说是无关紧要的，甚至是微乎其微的。③非洲的灾民嗷嗷待哺，急需粮食渡过荒年。。④第一要他自己学好才好，不然，不稂不莠的，反耽误了人家女孩儿，岂不可惜。⑤人非圣人，孰能无过一个人犯点错误，是难免的，不足为训。⑥家用电器降价刺激了市民消费欲的增长，原本滞销的彩电，现在一下子成了炙手可热的商品。

egular training in nursing,she could hardly cope with the workat first.

Where was it ______ you _______ our maths teacher?

Betty is a beautiful girl ________ bright eyes andblack hair.

________help the people in the snowstorm in the South made him worried.