用括号里的词的适当形式填空。

1. He ____________ (watch) TV at nine last night.

2. Lucy ____________(clean) the house since she came back home.

3. Jane ____________ (study) Chinese these months, for she plans to visit China.

4. When I went into the classroom. I saw her ____________ (write) on the blackboard.

5. Helen comes from France, she is a ____________(欧洲人).

6. Li Lei said he ____________ (想念)his parents very much.

7. Miss Zhou is very popular in our school, she is a ____________ (成功)teacher.

关于Ⅳ型超敏反应的机制的叙述，错误的是（）

A.致敏T细胞介导

B.单核巨噬细胞浸润

C.组织损伤和破坏

D.IgG抗体参与

E.淋巴细胞浸润