1. Lần cuối cùng tôi thự1. The last time I really enjoyed myself was your birthday party.  I haven’t 2. It's nearly 20 years since my father saw his brother.  My father hasn’t ________________________________________ 3. When did you learn to drive?  How long is it ___________________________________________ 4. The last time I went swimming was when we were in Spain.  I haven’t ________________________________________________________ 5. You haven't tidied this room for weeks.  It’s weeks _______________________________________________________ 6. We started looking for a flat 2 months ago and we are still looking.  We have _______________________________________________________ 7. This is the first time I've been to a night club  I haven’t __________________________________________ 8. They have never heard such a thing before.  This is the first time _____________________________________ 9. Noone has challenged his authority before.  This is the first time _________________________________ c sự thích thú là bữa tiệc sinh nhật của bạn.  tôi chưa