The passive voice

. Please help me to change this sentence into passive voice.

What did the teacher say?
What has been said by the teacher?
----------------------------------------------------------------------------------------
2. Choose the right answers for the following sentences.

pass passes passed past

a) We__passed___ through the narrow path to the hill.

b) You must get a___pass___ to enter a restricted area.

c) In order to go to school, we have to walk__past____ the park.

d) How many__passes____ have you got in your examination?

乜吾系
What had been said by the teacher?

您好，我推薦您一個非常不錯的英語學習網站，里面有很多非常不錯的學習資源，您能從中得到不少幫助：

http://www.hkenglishstudy.info

祝您好運!

1. The correct answer should be:
What was said by the teacher?

2009-05-03 14:43:03 補充：
004 - This question is past tense. Why do we need to change to present perfect tense and not simple past tense.