1) have changed; didn't like; 2) have found; where did you find; 3) has already lost; 4) lost; 5) Has Andrew spoken to the boss yet? 6) has been snowing; 7) I have already finished it; 8) studied; 9) have passed; 10) have you known...? 11) Have you ever written...? 12) waited; 13) has just gone out; 14) I haven't tried it; 15) has been eating.
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1) have changed; didn't like;2) have found; where did you find;
3) has already lost;
4) lost;
5) Has Andrew spoken to the boss yet?
6) has been snowing;
7) I have already finished it;
8) studied;
9) have passed;
10) have you known...?
11) Have you ever written...?
12) waited;
13) has just gone out;
14) I haven't tried it;
15) has been eating.