Would you like to go for a picnic with us—_____, but I’m too busy.

依次填入下列各句中横线处的成语，最恰当的一组是①面对棘手的问题，是派富有工作经验但魄力略显不足的老王去调解呢，还是让敢于担当但经验不足的小张去处理，张部长一时有些__________。②面对失控的中国楼市，如果我们__________，不能及时通过有力的政策调控来促进房地产市场的理性回归，消除房地产市场的投机行为，那将是很危险的。③当改革进入到必须触及一些既得利益集团的阶段时，什么困难都可能遇到，这时候需要的是勇往直前、敢打敢拼的精神，决不能__________，犹豫彷徨。

The woman ____ is talking to my mother is a friend of hers.

When Tom got to the examination room, he realized he ______ his pen at home.

We always keep _____spare paper, in case we run out. [ ]