giai va giải thích hộ e vs ạ 1This wine ______ in the cellar for 15 years. When we take it out and open it, it will taste beautiful! A. was B. has been C. have been D. is 2I have never felt happier than I do now. A. I felt happier before. B. I feel happy now. C. I have never felt happy. D. I have always felt happy. 3. I / see / friend / you / moments / ago A. I see a friend of yours a few moments ago. B. I saw a friend of yours a few moments ago. C. I have seen a friend of yours a few moments ago. D. I saw a friend of you a few moments ago. 4. This / be / first time / I / be / a plane. A. This is the first time I am on a plane. B. This is the first time I will be on a plane. C. This is the first time I have been on a plane. D. This is the first time I was on a plane 5It _______ a long time since I last _______ to my pen pal. A. is – have written B. has been – wrote C. is – wrote D. has been – write 6Several students have tried to solve the quiz, but no solution _______. A. has found B. was found C. found D. has been found