Please advise and explain which appropriate verb should be used in the following sentences:
a)We were playing when we saw the boy fall/falls/fell/fallen down the stairs.
b)Dennis saw the robber enter/enters/entered/had entered his neighbour's house.
Appreciate your assistance. Thank you.
So in (a) this complex is 'the boy fall' and in (b) - 'the robber enter'.
It looks I came in second. Sorry.