lucy has been my friend since she since she came to china 对划

lucy has been my friend since she since she came to china 对划 She kas been to Beijing_______(two) since she came to China. Jenny has been to Beijing three times since she was born .(划 Lucy has been cleaning the house since came back home. She hasn't written to her husband since she came to China. Tom has been at this school since he come to China.对since he ever since she came to china,为什么came不用第三人称单数形式呢? Lucy has been working ________ since she got ________ A in t She has lived in HK since she was born.(since she was born)划 She ___ the man since she was 20.A.has married to B.has been she has remembered 1400 english words since she came to our She has been playing basketball (since she was seven )（对括号内提