1 . 如果你拨打我们的热线，我们会帮你处理生活中的问题。
If you call our hotline, we will help you ________ ________ the problems in your life.

2 . 昨晚我直到解出了这道题才睡觉。
I didn’t go to bed _______________________ the math problem last night.

3 . 我们不能解决这些问题，除非我们跟她们沟通。
We can’t ________________ the problem unless we ________________ them.

4 . — Why didn’t your parents attend the parents’ meeting this morning?   
— Because they are on business in Shanghai. And they couldn’t come back this morning.

A．work out

B．take part in

C．take care of