81. 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.

82. 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.

83. 他们坐在草地上，有说有笑。

They were sitting on the grass, ___________ and ___________.

84. 总统随后讲话并解答了记者的提问。

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

85. 没有免费的午餐。

There is ___________ ___________ thing as a free lunch.