Which of the following statements is written incorrectly?
เลือกคำตอบเดียว
a. I am pleased to place our order and I enclose a cheque for $2,340.
b. I hope that this does not due to you too much.
c. I am sure it will be a great evening and a successful launch for an excellent new series of books.
d. Thank you for your kind invitation to the launch of the Worldwide Encyclopaedia on 6 September.