Hi there. There is a quiz from book "Grammar and vocabulary for First Certificate", preparing for the ESOL
First Certificate in English (FCE) (Cambridge University) . It's extracted from one module, devoted to
Link words : purpose and reason. It implies upper-intermediate level. I hope it would be useful.

1.
I phoned I need to speak to you.
2. the rain has stopped, we can go back in the garden.
3. the bus was late, I missed the meeting.
4.We took a taxi be late.
5.The traffic jam is to major roadworks.
6.Emma came first all her hard work.
7. I'm going by bus save costs.
8.I'll reply your e-mail he can buy the ticket today.
9.She didn't water the plants, they died.
10.We'll join the euro our economy will improve.