The offer is firm subject ____ before October 1.
A.for your reply reaches us B.for your reply reaching us C.to our receiving your reply D.to your reply reaching us
参考答案:
答案解析:
We confirm ____ purchased 2,000 MP3 Players ____ you.
We confirm ____ purchased 2,000 MP3 Players ____ you.A.have, to B.having, from