Since I came to China I’ve known that about seven people _____ten speak Chinese[ ]

Please turn off the radio,grandma ___now.— OK, I’ll do it right now.

Who is the man, actually—I don’t know for sure. But I think he canbe _______ but a teacher.

下列各句中，成语最恰当的一项是①在夏季减肥食谱中，有四种食物位于爱美女士们的黑名单，被排除在减肥食物之外，千万碰不得，否则会让你的努力 ！②可下半场的最后5分钟内，我们差点将全场的努力 ，所以说我们要拿下一场比赛还是要在5分钟之后才能确保，在最后5分钟内，对手有3次很好的机会，如果我们想要成为“英东杯”冠军，就要避免这些状况。③这90户业主不肯退铺，让大华公司以回购商铺的方式解决大润发购物中心困境的努力 。

Up to Tuesday’s attack, the worst school shooting in the U. S. was in March 1998 in Jonesboro,______two boys, aged 11 and 13, shot and killed a teacher and four girls.