The increasing number of cars on the road _______ traffic. This was the reason why we couldn’t get here on time.

While doubts about the medicine’s safety have____________, interest continues to grow.

---Have you ________?---No. I had the wrong number. 

I’ll never forget the good trick my classmates ________ on me when I was in the primary school.

 It _______ that Chinese football team beat Japanese team at the last moment in the Universiade in Shenzhen.