In Simple past^x, Present tenses^x, Expressions^x

Yes, ok. The verb "to know" is usually used in the simple past tense in some expressions with "never" or "always", for example. Other verbs are usually used in the present or past perfect with "never" or "always". I also see you are not quite sure whether to choose a present or past tense......

Hi estef, hiperactif is correct, (although maybe just because isn't the full answer you were seeking "I as wondering where you come from" (meaning country of origin) We use the present tense here because we are referring to a permanent situation. Wherever I choose to live in the world, I...

'Can't', I feel, would be far the commoner expression in both written and spoken English Sorry, Mr. Micawber. I don't get this one. You mean 'would be the common expression', or what? Anyway, I think the situation that the tense in the subordinating clause holds at the present is very common...