定语从句专项练习
1.We should learn from those___are always ready to help others.
A.who B.whom C.they D.that
2.Mr. Herpin is one of the foreign experts who___in China.
A.works B.is working C.are working D.has been working
3.Tom is the only one of the students who___to Shanghai.
A.have gone B.have been C.has been D.had gone
4.I,___your good friend,will try my best to help you out.
A.who is B.who am C.that is D.which am
5.The old man has two sons,___are lawyers.
A.both of them B.both of who C.both of whom D.both of they