We have received your letter of September
题型:单项选择题
问题:
We have received your letter of September 12,()we are glad to know that you are interested in our electric heaters.
A.which
B.at which
C.from which
D.in which
We have received your letter of September 12,()we are glad to know that you are interested in our electric heaters.
A.which
B.at which
C.from which
D.in which