Helistenedtothemtalkingcarefully,andthrewinawordortwo

問題詳情：

 He listened to them talking carefully, and threw in a word or two _____.

  A. more or less                       B. from time to time

  C. here and there                     D. sooner or later

【回答】

B

知識點：詞組 短語

題型：選擇題