1.Henry, ………………….work have been famous in the world, was an American writer

1.Henry, ………………….work have been famous in the world, was an American writer.
         a. which   b. that     c. who     d. none are correct
2.Hardly ……………………Duy when she stayed smiling.
         a. had she seen b. she had seen c. has he seen d. does she see
3."Nghi doesn't like American beer" -".......does Vy"
         a.either    b.so       c.neither     d.too
4.Ken doesn't work here......he left about six months ago.
         a.any longer   b.no longer    c.still    d.yet
Giúp mình vs ạ!!!!!!!