Tom is one of the students who ( )to china.为什么空格中不能填has gone ,一定要has been.我知道两者的意思,觉得都可以填,但是找的答案都是后者,为什么呢?谢谢了.

Tom is one of the people who as they are He is t____ to be one of the greatest pianists in the 21st century Halloween is on October 31st.It is one of the most favourite holidays for children in the USA. tom is one of the greatest ______(mind) of the age. Tom is one of my favourite______(swim) Of the two boys,Tom is _ one. A.smarterOf the two boys,Tom is _ one.A.smarter B.the smarterC.smartest D.the smartest Of the two boys,Tom is __ one.A.smarterOf the two boys,Tom is __ one.A.smarter B.the smarterC.smartest D.the smartest Tom is one of the _(interesting) boys in the class横线中用加most吗 Tom is one of the best player in the city football team.找出错误并改正 Tom is the only one of the students who()music loversareis werewas能说下原因么 连词造句 Tom one is tallest the Tom is one of the people who ______ they are now.为什么填as 用适当的介词填空.Who is the teacher talking___?Tom,one of his studens. Tom is one of the people who as they are now怎么翻译? Tom is one of the people who as they are now.这句话中的谓语是? Tom is one of the people who as they are now.语法正确么? I( )(me)would not recommend that restaurantTom's date of birth is 1st June=Tom( )( )( )1st June. 26.Tom is the only one of the stall...26.Tom is the only one of the stall members who ______ to be promoted.a.is going b.are going c.has been going d.have been going