根据汉语提示完成句子。
1. 如果你是美国总统，你会做些什么？
_______ you do if you the president of the USA?
2. 我要是有很多钱，我就会做医学研究。
If I had lots of money, 1 would do _________.
3. 如果他们不来怎么办？没有他们我不能做这件事。
_______ they don't come? I cannot do it without them．
4. 我很想要只猫，但是我的父母亲不让我养。
I really want a cat. but my parents won't ________ ________.
5. 如果你对人们比较友好，你会有许多朋友。
If you were ________ to people, you would have more friends.