用所给动词的适当形式填空。

1. He _____________ (spend) all day on his hometown last Saturday.

2. His mother _____________ (take) him to a hospital four days ago.

3. I _____________ (see) Mary on my way home last Monday.

4. Once upon a time there _____________ (live) an old fisherman named Li Yu.

5. Mr Fang _____________ (teach) Chinese when we _____________ (be) in primary school.

关于瘙痒症以下叙述不正确的是（）。

A.临床上仅有瘙痒症状而无原发性皮肤损害的皮肤病

B.病因繁多，常与某些系统性疾病有关

C.某些物理、化学刺激及药物也可引起本病的发生

D.临床上很少见到继发皮损

E.积极寻找原发病因并进行相应的治疗，是预防本病的关键