根据所给中文意思，完成下列句子。（共5小题，每空0.5分，共5分）

小题1:我想解决这问题的关键是兴趣而不是强迫。

In my opinion, the key ___________ ___________ the problem is to be interested rather than to force yourself.

小题2:如果你继续以这种方式行事，最终会像老话说的那样：搬起石头砸自己的脚。

If you continue like this, you will ___________ ___________ lifting a stone only to have it drop on you own foot, as the old saying goes.

小题3:他们坐在草地上，有说有笑。

They were sitting on the grass, ___________ and ___________.

小题4:总统随后讲话并解答了记者的提问。

The President then took __________ ___________ and answered the journalists’ questions.

小题5:没有免费的午餐。

There is ___________ ___________ thing as a free lunch.