Change the following sentences into the Passive．
(把下面句子变为被动语态。)
They have greatly reduced the production costs．
My mother usually cooks dinner．
We plant trees every year．
When did they complete the building?
The pianist gave the pupils some advice．
We are repairing the machine in the school factory．
They are building a new railway．
Complete the sentences with the phrases in the box in their right forms．
(用方框中短语的正确形式填空。)
1．She ________ her room ________ flowers．
2．We ________ the fire with the help of the PLA soldiers．
3．Tom ________ have gone abroad last week．
4．Some dogs are trained to help ________．
5．The old temple was ________ in a big fire．
6．I’m ________ today．I must go to school earlier to clean the classroom．
7．My mother raises ________ chickens in the yard．
8．The good soil on the surface was ________ by the flood．
9．Will you ________ the meeting tomorrow?
10．The doctors are ________ the wounded soldier．
Read the text and tell which festival each sentence belongs to．
(阅读课文，并说出下面的句子属于哪一个节日。)
On that day, the moon is said to be its biggest and brightest．
The festival falls the on the fifth day of the fifth month of the lunar year．
