The new dictionaries are very useful. Th
问题:
The new dictionaries are very useful. They ________ well and ________ already .
A.sell; have been sold out
B.sold; had sold out
C.sell; sell out
D.are sold; have been sold out
The new dictionaries are very useful. They ________ well and ________ already .
A.sell; have been sold out
B.sold; had sold out
C.sell; sell out
D.are sold; have been sold out