Present Perfect Simple Or Continuous

Choose present perfect simple or continuous:

1) Have they arrived (they/arrive) already?
2) Lucy has run (run) 2000 metres today.
3) I have been cleaning (clean) all morning – I’m fed up!
4) How long have you known (you/know) Simon?
5) I‘ve been drinking (drink) more water recently, and I feel better.
6) Sorry about the mess! I‘ve been baking (bake).
7) How many times have you taken (you/take) this exam?
8) He has eaten (eat) six bars of chocolate today.
9) Julie has cooked (cook) dinner. Let’s go and eat!
10) The students have finished (finish) their exams. They’re very happy.
11) The baby’s face is really dirty. What has he been eating (he/eat)?
12) Iona is exhausted these days. She has been working (work) too hard recently.
13) Luke‘s never been (never/be) abroad.
14) I have been waiting (wait) three hours already!
15) Have you finished (you/finish) your homework yet?
16) How long have you been (you/be) a lawyer?
17) I have been reading (read) your book all day. It’s very interesting, but I’m only on chapter 2.
18) She‘s drunk (drink) ten glasses of water!
19) I have had (have) my dog for sixteen years.
20) Help, I‘ve lost (lose) my wallet. How can I get home?