读句子，根据所给提示或首字母填空。
小题1:My parents have always taught me the (重要性)of working hard.
小题2:I think people who eat a balanced diet should be more (健康)than those who only eat biscuits and hamburgers.
小题3:Martin always causes problems for ______________(他自己)and his family.
小题4:His d made Mary sad for a long time.
小题5:The tourists had no c _____________but to wait for the next bus
