四六级考试

【单选题】
A、They are paying for his education.
B．They invited him to their party.
C．They took him on a vacation with them.
D．They let him live with them for free.

网考网参考答案：D
网考网解析：
[听力原文] Why is David appreciative of the Kramers document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>