育才小学有28个教室，每个教室有26张桌子，这些教室大约共有多少张桌子？
下列成语的使用，有误的一项是 （ ）
⑴I'm hungry.____ A. She's running.
⑵What are you doing?____ B. He's making noodles.
⑶What are they doing?____ C. I'm hungry, too.
⑷What is she doing?____ D. They are rowing a boat.
⑸What is Sam doing?____ E. I'm reading a book.
