`1` . reduce
`2` . haven't left
`3` . most peaceful
`4` . Although
`5` . visited
`6` . is - will go
`7` . recycling
`8` . Cần có hình nha !
`9` . Cần có hình nha!
`10` ; `11` Không có hình nên không làm được!
`12` . I didn't go to school yesterday because I had a bad cold
`13` . Although Lan can't play the piano , she can sing very well
`14` . If we don't use the car all the time we will make the air cleaner
`15` . Tea is the most popular drink in London/
`16` , `17` , `18` cần có đáp án A,B,C,D rõ ràng ra
`19` `->` `21` Cần có bài đọc
`22` . bought
`23` . Does Peter live
`24` . haven't finished
`25` . Cần có đáp án A,B,C,D với nội dung rõ ràng
`26` . am studying
`27` . Minh has collected stamps since 2000
`28` . This is the first time they have ever eaten spaghetti.
`29` . The last time we saw Tom was in 2000
`30` . It's 2 years since my father was to Hanoi.