THEY HELD A PARTY TO CONGRATULATE _______ THEIR SON'S SUCCESS TO B...
54.
They held a party to congratulate _______ their son's success to become an engineer.
a. with
b. on
c. for
d. about
54.
They held a party to congratulate _______ their son's success to become an engineer.
a. with
b. on
c. for
d. about