Giúp mk bài điền từ này vs Ex5. Complete the description with the correct form of the phrasal verb: ( take on, pull off, took up, get back, pull ____ out, cut off) THE ARTIC CHALLENGE Last year, I (1)........... the Artic Challenge. It's a race with dogs across the Artic ice. Racing with dogs is a great hobby ưhich I only (2)......... three years ago. I set out with my team of six dogs early in the morning. After two hours, one of the dogs hurt its leg. I had to use my knife to (3)........... the rope that tied the dog to my sledge. An hour later, the sledge fell into a hole, and I had to (4)......... it ............ . It was really difficult to do this because the sledge was too heavy. I had to call for help and somebody came to rescue me. We didn't (5).......... to the starting line until late at night. I was disappointed, but I'm not going to give up. I wasn't successful this year, but I hope to (6)............it............... next year.