Student or Learner
The growing number of vistors ---------- the footpaths.
a. is damaging b. are damaging
Jane --------- just a few minutes ago.
a. left b. had left
why using had left is wrong here?
--------- Robert lately?
(a) Did you see
(b) Have you seen
I get confuse which is right answer and how to select
*Not a teacher
The growing number of visitors is damaging the footpaths. - singular, because the subject is "the growing number", not "visitors"
Jane left just a few minutes ago. - the time is specified: a few minutes ago. We use past simple when the time is specified.
Have you seen Robert lately? - we use perfect tenses with lately