The waiter took away the plates after we finished eating. (改为被动语态)
The plates away by the waiter after we finished eating.
Is there a pet dog in your home?(变复数形式)
there pet dogs in your home?
Li Lei does the housework every day.(改为否定句)
Li Lei the housework every day.
It was surprising for her to passed the English test yesterday.(改为同义句)
her , she passed the English test yesterday.
Mr. White began collecting coins when he was fifteen.(改为简单句)
Mr. White began collecting coins the of fifteen.
With the help of my friend,I learned about sending messages.(就划线部分提问)
you learn about sending messages?