A.has worked
B.worked
C.had worked
D.works
[单选题]They ______each other for more than twenty years.A.don't seeB.didn't seeC.h
[单选题]They ______each other for more than twenty years.A.don't seeB.didn't seeC.h
[问答题]()Chinawill build up a space station in ten years.
[问答题]()He has been learning English for years.
[问答题]He has been learning English for years.
[问答题]He has been learning English for years.
[单选题]As a productivewriter,he [turned out] three novels these years.A.producedB.
[单选题]He( )with Smith at least four times in the past three years.A.has been seen
[单选题]He( )with Smith at least four times in the past three years.A.has been seen
[单选题]He( )with Smith at least four times in the past three years.A.has been seen