The new car won’t go into production soon. The engine of it hasn’t been fully ___.
#65232
A
carried out
B
worked out
C
tested out
D
put out
推荐题目
 Every year, _____ energy is spent on environment protection.
#64419
A
large quantities of
B
a good many
C
a great deal of
D
a plenty of
The great man  a lot   society before he died.
#80792
A
have contributed;on
B
had contributed;to
C
contributed;at
D
contributes;for