Question

Veena can water the plants ____________________ we trim the hedges. (and, while, if)

Answer 1

A pronoun following a preposition should be in object form

If it is a pronoun, it should therefore be in the objective form (me, her, them), not subjective form (I, she, they): This is from my wife and me. That's between him and her. Mary gave it to them.

Answer 2

Answer:

while we trim the hedges