小题1:0ur city is beautiful.(改为感叹句)

______ our city is!

小题2:There are two hundred famous companies in Xinjiang from 19 provinces.(对划线部分提问)

______ _______famous companies in Xinjiang are there from 19 provinces?

小题3:1 am surprised to find great changes have taken place in China.(改为同义句)

______ my ______ ,I find great changes have taken place in China.

小题4:My son is too young to join the army. (改为同义句)

My son isn’t _______ to join the army.

小题5:She hardly knew how to solve this math problem.(完成反义疑问句)

She hardly knew how to solve this math problem, _______ ________ ?

汽饥大修后油循环时一般油温维持在（）时最合适。

A、50～70℃。

B、40～50℃。

C、35～45℃。