He when he was only four.

The fact that so many people still smoke in public places ________ that we may need a nationwide campaign to raise awareness of the risks of smoking.(2011·江苏)

His letter was so confusing that I could hardly make any ______ of it.

My parents often tell me _______ too muchjunk food. It’s bad for my health.

依次填入下列横线处的成语，最恰当的一组是(　　)①当年我逃难至此，要不是你，我差点儿就没命了，以后但凡有用得着我的地方，就是________，也在所不辞。②他们两个人在战场上可是一起________的好兄弟，哪里会为了这么点儿小事就闹意气呢你尽管放心吧。③在驱逐外侮、走向共和的过程中，既有________的英雄豪杰，也有贪生怕死的懦夫小人，我们鄙视后者，而敬仰前者。