a) The person who stole the painting must have been tall.
-> Whoever stole the painting must have been tall.
b) I don’t mind what you do, but don’t tell Jane I was here.
-> Whatever you do, don't tell Jane I was here
c) What on earth is the time?
-> Whatever is the time?
d) I’d like to know why you told me a lie.
-> Why ever did you tell me a lie?
e) Every time I go on holiday, the weather gets worse.
-> Whenever I go on holiday, the weather gets worse.
f) Tell me where you have been!
-> Wherever have you been?
g) How on earth did you know I was going to be here?
-> However did you know I was going to be here?
h) I won’t believe you, no matter what you say.
-> Whatever you say, I won't believe you.