用所给动词的适当形式填空。

1. I often ______ checkers with my grandpa. (play)

2. We are ______ home from Beijing. (arrive)

3. —Did you ______ the T-shirt?

    —Yes, I ______ it very much then. (like)

4. I ______ to Wangfujing Street yesterday. (walk)

5. He ______ to talk to you yesterday. (want)

6. What ______ he want to know? (do)

下列哪点不是系统性红斑狼疮与RA的鉴别点（）

A.蝶形红斑

B.血清抗核抗体阴性

C.早期常出现补体低下

D.抗双链DNA抗体阳性

E.蛋白尿明显