问题
选择题
Their telephone number is 5675707. Have you ?
A．written it down
B．written down it
C．written them down
D．written down them
答案
答案：A
题目分析：句意：他们的电话号码是5675707，你记下了吗？短语write down记下，如果宾语是名词，可放在短语中间，也可放在副词down后面；如果宾语是代词，要放在动词和副词中间；句中用代词it来指代电话号码，故选A。