[AdvantageEnglish]

1. We've got the next lesson in the language laboratory.

This breaks down to WE HAVE GOT... the operative word being HAVE, which is SIMPLE PRESENT. The word NEXT was supposed to confuse you into thinking it was a future tense...but of course we weren't fooled by that !

2. I am to give a speech at the conference next week.

Well...this is the same as number one, SIMPLE PRESENT, with a similar trick.


3. I wish I had more time to finish this exercise

As the previous writer noted, this is an UNREAL tense... meaning that it is impossible to change the past, hence the statement is a wish which cannot become real... Similar to UNREAL CONDITIONAL --> "If I had more time, I could (would) finish this exercise."
However... that's not a choice option.

This would also be SIMPLE PRESENT (albeit UNREAL)