It's a pleasure to be ( ) help.
A.toB.of C.with D.for
参考答案:B
解析: 句意为:很高兴为你提供帮助。常用句型。
My friend Jane works as _______as his brother.
A.hard
B.harder
C.hardest
D.much hard
简述收购与兼并的区别。