Question

I like swimming very much, but now I ________ swim as ________ as I used to．

1. A.
   don't…often
2. B.
   not…often
3. C.
   don't…oftener
4. D.
   not…oftener

Answer 1

A
as…as是同级比较，中间的形容词或副词应该使用原级，本句为一般现在时，助动词为do，构成否定式为don't．