Question

-- _____ you _____ take a bus to school?
-- Yes, but now I usually go to school on foot.

1. A.
   Did, use to
2. B.
   Were , used to
3. C.
   Do , use to
4. D.
   Did, used to

Answer 1

A
試題分析：根據語境可知此句的含義是過去你經常乘車去上學嗎�？疾榈氖枪潭ň湫徒Y構used to do sth表示過去常常做某事，現在不做了。其一般疑問句的結構要借助助動詞did的形式，構成did sb use to do sth故選A。
考點：used to do sth
點評：注意區分be used to doing sth、used to do sth 、be used as和be used for doing sth四個個句型結構的區別和意義。be used to doing sth是習慣做某事，used to do sth表示過去常常做某事，現在不做了。be used as是把…用作…be used for doing sth表示被用來做某事。