国中英语定语从句专项训练题

should learn from those___are always ready to help others.

. Herpin is one of the foreign experts who___in China.

s working working been working

is the only one of the students who___to Shanghai.

gone been been gone

4.I,___your good friend,will try my best to help you out.

is am is h am

old man has two sons,___are lawyers.

of them of who of whom of they