He()withSmithatleastfourtimesinthepastthreeyears.
A.has been seen to meet B.was seen to meet C.had been seen meeting D.is seen meeting正确答案A
He()withSmithatleastfourtimesinthepastthreeyears.
A.has been seen to meet B.was seen to meet C.had been seen meeting D.is seen meeting正确答案A