Practice 16: Are the underlined parts of these sentences right or wrong? Correct them where necessary
6) Who has invented paper?
7) Where have you been born?
8) Ellie isn't at home. She's gone shopping
9) Al. Einstein has been the scientist who has developed the theory of relativity
10) I've lost my key. i can't find it anywhere
11) Have you eaten a lot of sweets when you were a child?
12) I've bought a new car. You must come and see it
13)I've bought a new car last week
14) Where have you been yesterday evening?
15) Lucy has left school in 1999
16) I'm looking for Mike.Have you seen him?
17)'Have you been to Paris?', ' Yes, many times '
18) I'm very hungry.I haven't eaten much today