Question

Dung is kind and helpful, but he is also a little careless _____________.

A. at time                    B. at a time                  C. at times                   D. once a time

 

Answer 1

【答案】

C

【解析】

試題分析：句意：Dung好心腸并樂于助人，但是他有時(shí)也有些粗心。in time及時(shí)，遲早；on time準(zhǔn)時(shí)；at a time曾經(jīng)；at times有時(shí)，偶爾；once a time從前。根據(jù)句意選C。

考點(diǎn)：考查介詞短語。