改否定句和一般疑问句
问题描述：
改否定句和一般疑问句
there were about nine hundred people at the concert.
there was only one problem.
last week i read an english book.
my brother was in the park just now.
she had some bread for lunch today.
答
there weren't about nine hundred people at the concert.
were there about nine hundred people at the concert?
there wasn't a problem.
were there any problems?
last week i didn't read an english book.
did you read an english book last week?
my brother wasn't in the park just now.
was your brother in the park just now?
she hadn't any bread for lunch today.
did she have any bread for lunch today?