Because of ________ mail we receive, we may not be able to reply to your letter．Please remember to include your full name in your letter．

1. A.
   a great many of
2. B.
   a large number of
3. C.
   the large amount of
4. D.
   a great plenty of

Because of______mail we receive，we may not be able to reply to your letter．Please remember to include your full name with your letter．

A.a great many of　 B．a large number of

C．a large amount of D．a great plenty of