The new books are of great use, they _____ well and _____ already.

 A. sell : sell out   B. sold : had sold out   C. sold : have sold out  D. sell : have been sold out

 The new books are of great use. They  ____ well and ____ already.

A. sell;  sell out                           B. sold; had sold out

C. sold; have sold out                  D. sell; have been sold out

 The new books are of great use. They  ____ well and ____ already.

A. sell;  sell out  B. sold; had sold out

C. sold; have sold out                       D. sell; have been sold out

The new books are of great use, they _____ well and _____ already.

The new books are of great use, they _____ well and _____ already.

The new books are of great use．They ________ well and ________ already．

1. A.
   sell; have been sold out
2. B.
   sold; had sold out
3. C.
   sell; sell out
4. D.
   sold; have sold out