13. Helen ………….my best friend since we …………school. 1.has been/ started 2.was/ started 3.is/ started 4.has been/ has started 14.  15. My brother’s new car is …………..than mine. 1.the better 2.the best 3.good 4.better 16. I’ve got a blanket and lots of food in the basket. We’re going for a ………..in the park. 1.walk 2.picnic 3.run 4.trip 17.  18. My grandparents are old and we look ………..them. 1.up 2.forward 3.after 4.for