6．How many pens has he?/How many pens does he have?

5．How do we write words?

4．How often does he write to his friend?

3．How much did the book cost you? 注意原句 cost是过去时。

2．What is Li Lei, “What is(sb. )?”是一个问某人职业的句型，问某人职业还可用 What do(dose) sb. do?或 What's one's job?等。

1．Where dose Miss Chen teach Chinese?

6．B 7．因为答语既说了时间，又说了地点，故用 when and where。

Ⅱ．

5．D．同上。

4．C．根据答语 Once a week可知。

3．A．根据答语 about a month可知疑问词应用 how long。