I must return the dictionary to Allen now. I _____ it for three weeks already.

A. kept           B. will keep        C. have kept

I must return the two books to the library. I _____ them for 20 days.

I must return the dictionary to Allen now．I _________ it for three weeks already．

A．kept          B．will keep             C．keep          D．have kept

I must return the two books to the library. I _____ them for 20 days.

1. A.
   borrowed
2. B.
   kept
3. C.
   have kept
4. D.
   have borrowed