Part 2: Choose the word or phrase in brackets that best completes each sentence. (2,0ms) 
1. I am interested  (on/ in / at/ to) ………… learning English.
2. John is (a/ an/ the/ x) ……….. active student. He has taken part in many helpful activities.
3. Nha Trang, (where/ which/ when/ whose) ………… I visited last year, is a very beautiful city.
4. They will burn trash to reduce this amount of garbage, (will/ won’t/ will not/ do) ……….. they?
5. Do whatever we can to conserve oil (although/ but/ because/ so) ………….  oil is a valuable natural resource.
6.  - A: I think we should take a shower instead of a path to save energy. - B: (Yes, please/ No, thanks/ Good ideas/ I’d love to)
7. - A: How (often/ long/ far/ fast) ……….. can you run? - B: Seven kilometers per hour.
8. It’s not always easy to (make/ say/ do/ tell) ……………. the difference between fact and opinion.