根据所给提示，完成下列句子。每空一词，含缩略词。

69. Jenny’s mother goes to work by bus.  (变否定句句)

   John’s mother ________ ________ to work by bus.

70. It took him three hours to write the letter yesterday evening.  (对划线部分提问)

_________ ________ did it take him to write the letter yesterday evening?

71. Mike drew a picture on the blackboard. （改为被动语态）

   A picture ________ ________ on the blackboard by Jack.

72. 在航天科技方面，我们中国越做越好。       

    We Chinese are _______ and _______ at space technology. 

完成句子。

根据所给提示，完成下列句子。每空一词，含缩略词。

1.Jenny’s mother goes to work by bus.  (变否定句句)

John’s mother ________ ________ to work by bus.

2.It took him three hours to write the letter yesterday evening.  (对划线部分提问)

_________ ________ did it take him to write the letter yesterday evening?

3.Mike drew a picture on the blackboard. （改为被动语态）

A picture ________ ________ on the blackboard by Jack.

4.在航天科技方面，我们中国越做越好。

We Chinese are _______ and _______ at space technology.

完成句子。
根据所给提示，完成下列句子。每空一词，含缩略词。
【小题1】Jenny’s mother goes to work by bus.  (变否定句句)
John’s mother ________ ________ to work by bus.
【小题2】It took him three hours to write the letter yesterday evening.  (对划线部分提问)
_________ ________ did it take him to write the letter yesterday evening?
【小题3】Mike drew a picture on the blackboard. （改为被动语态）
A picture ________ ________ on the blackboard by Jack.
【小题4】在航天科技方面，我们中国越做越好。
We Chinese are _______ and _______ at space technology.