42. We haven’t been taken to the zoo for 5 months.
= The last time we…………………………………………………………………………………………
43. This is the third time I have been to Nha Trang.
= I have……………………………………………………………………………………………
44. Have you come here before?
= Isn’t this ……………………………………………………………………………………………….?
