Answer :
a is not correct: it should be "wait for me"
b. it should be "she is learning"
c. i think it's supposed to be "his mother" (else him (father?) and his mother?
d - I can't find any mistakes here, correct!
b. it should be "she is learning"
c. i think it's supposed to be "his mother" (else him (father?) and his mother?
d - I can't find any mistakes here, correct!