The new dictionaries are very useful. They _______ well and _______ already. 
#101305
A
sell; have been sold out
B
sold; had sold out
C
sell; sell out
D
are sold; have been sold out
推荐题目
Large quantities of oil      in a place near my hometown recently. 
#102718
A
has discovered
B
have discovered
C
has been discovered
D
have been discovered
Helen ________ her keys in the office so she had to wait until her husband ______ home. 
#101502
A
has left; comes
B
left; had come
C
had left; came
D
had left; would come