题目内容：

阅读下列各小题，根据汉语提示,在空格上填入恰当的词，使句子完整。

1.难怪她不饿，她整天都在吃糖果。

_______ _______ she is not hungry; she has been eating sweets all day.

2.海关怀疑那位旅客携带毒品，所以拦住了他并检查了他的行李。

_______ the traveller _______ carrying drugs, the Custom official stopped him and went through his suitcase.

3.让我激动的是有这么多的珍宝在展出。

_______ _______ _______ was that there were so many treasures on show.

4. 就为了省一点点钱而买最便宜的电脑是不明智的。

It _______ _______ _______ to buy the cheapest computer just to save a little money.

5.只有我们齐心协力,我们才能成功。

_______ _______ we pull together, _______ _______ achieve success.