Complete the third conditional sentences with the correct form of the verbs in brackets.
a) I .............. (help) you if you had asked me.
b) If people ........ (protect) the dodo, it wouldn't have become extinct.
c) If we... ............... (not use) so much fossil fuel, we wouldn't have done so much damage to
the environment.
d) If I had known about the destruction of the
rainforests, I....... (become) a
vegetarian earlier.
e) If she had studied more, she.... (pass) her exams...​