根据所给汉语提示,写出空缺处单词正确形式.

1. How long have you _____ (学习)English?

2. Mr. Wang _____ (教) us Chinese.

3. My father knows our _____ _____ (校长).

4. When did you _____ (到达) in Beijing?

5. Mr. Smith has taught English in that school _____ (自从) he came to China.

麻疹出疹的顺序是（）

A.头面→耳后→躯干→四肢末端→全身

B.耳后发际→面部→躯干→四肢→手掌足底

C.四肢末端→头面→躯干→背部→胸部

D.四肢末端→躯干→头面→耳后发际

E.四肢末端→头面→耳后发际→前胸→后背