I wrote my brother last Saturday but I haven’t heard him up to now.A. from; toB. to; ofC

问题补充：

I wrote my brother last Saturday, but I haven’t heard him up to now.

A. from; to

B. to; of

C. to; to

D. to; from

答案：

A. from; to

B. to; of

C. to; to

(答案→)D. to; from

解析：固定的用法。Write to意为“给某人写信”，hear from意为“收到某人的来信”