a) they start new games
→ They have started new games
b) we buy many clothes
→ We have bought many clothes
c) I travel by plane
→ I have traveled by plane
d) she drinks a lot
→ She has drunk a lot
e) you read everyday
→ You have read everyday
f) They see the gift
→ They have seen the gift
g) she writes a book
→ She has written a book