/a. Phil has worked

b. Linda and Jane have seen

c. I have

/a. he hasn't climbed

b. they haven't had

c. you haven't finished

/a. Has he fallen over?

b. has she won the lottery?

c. has James broken his toy?

/a.Have you already played water polo?

b. I have never eaten Shepard's Pie

c. has he done his maths homework?