A BUSINESSMAN ... IN HIS SHORTHAND TYPIST WHEN HE WANTS TO DICTATE...

20. - 70 DE THI CHUNG CHI B TIENG ANH 20. - 70 DE THI CHUNG CHI B TIENG ANH
70 DE THI CHUNG CHI B TIENG ANH

20. A businessman ... in his shorthand typist when he wants to dictate letters. He can use a

dictating machine.

a. need not call

b. doesn't need call

c. need not to call

d. needs not call

a