`=>`
`V)`
`1` . came
`2` . will send
`3` . has worked
`4` . graduated
`5` . plays
`6` . was cooking
`7` . Have you slept ; have rang
`8` . to attend ; pass
`9` . has lost ; has been looking
`10` . have seen
`11` . help
`12` . doesn't feel
`13` . hasn't bought ; broke
`14` . haven't had
`15` . came
`16` . went ; hasn't been
`17` . has been writing ; hasn't finished
`18` . were ; would tell
`19` . died ; has never met
`20` . go
`VI)`
`1` . We started learning English 4 years ago.
`2` . They began working in that factory in 2001.
`3` . It is two years since I last met her.
`4` . This is the first time I have ever seen her.
`5` . My father has given up smoking since last year
`6` . I haven't seen her for 10 years.
`7` . How long have you listened to classical music ?
`8` . When did you start teaching English here ?
`9` . We haven't seen her father for a long time.
`10` . I haven't seen him for three years.
`11` . I have not eaten this kind of food before.
`12` . Were I you , I would help you
`13` . Had I known her , I would have made friend with her.
`14` . Should you run into Peter , tell him to call me.
`15` . Without water , life wouldn't exist.
Ex `6` :
`2` . got ; was ; went
`3` . Have you washed
`4` . wasn't
`5` . has worked
`6` . have never met