问题
The farmer was very thankful to the doctor ______ treated his son.
A:what
B:which
C:who
D:whose
B:which
C:who
D:whose
正确答案是：
同类题型
_________ is known to us all that the earth is smaller than the sun
You’ve heard the proposal; now go away and_________. [ ]
Under good treatment, Linda is beginning to _________ and will soon recover.
Simply learn to live in the present, ________ think so much about the future or the past.
27—I can’t find FredHe is not at home—Why don’t try______him