The dog is_____ man's best friend,A true B certainly C truly D certainly
问题描述：
The dog is_____ man's best friend,A true B certainly C truly D certainly
答
C
答
B certainly 或D certainly，其实都一样
狗无疑是人类最好的朋友
答
选A。另外，clavichord是正确的写法，你给的多了一个字母a，是古钢琴的意思。如果本题 the 换成 a ，那么就是选B了。这个要注意哦~~~ （A）我
答
B
答
B certainly
答
D certainly