( )you often ( )in the library?A,do;reading B,do;read C,are reading

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( )you often ( )in the library?A,do;reading B,do;read C,are reading
( )you often ( )in the library?A,do;reading B,do;read C,are reading

( )you often ( )in the library?A,do;reading B,do;read C,are reading
B
有了oftenC排除因为C是现在进行时
A也可以排除因为A前面有了do 后面就不可以用reading

B
主要是often,一般现在时。

b