题目内容：

根据汉语完成下列句子：

1.老板说他会亲自参加这个会议。

The boss said he would attend the meeting ________ __________.

2.--我们什么时候举行运动会？---视天气情况而定。

---When shall we hold the sports meeting?

--- It _______ _______ the weather.

3.我认为朋友之间重要的是同甘共苦。

I think what matters to a true friend is to ______ trouble and happiness _____ each other.

4. 演算出这道数学题恐怕要费很大的困难。

We will have great difficulties _______ _______ out the maths problem.

5. 最新研究发现很有可能是马克.波罗首次发现美洲。

According to the latest finding,______ was Marco Polo who first ______ America.