专升本考试

【单选题】Your sister used to visit you quite often, ______
A．isn't she
B．use not she
C．wasn't she
D．didn't she
网考网参考答案：D
网考网解析：
句中used可看作是use的过去式． document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>