根据括号内的要求改写下列句子，每空一词。
Study hard, or you’ll fail the exams. (改为同义句)
_________ you _________ study hard, you will fail the exams.
Mary is good at writing Chinese words. (改为同义句)
Mary _________ well _________ writing Chinese words.
“I can sing some English songs.” Li Ming said. (变为间接引语)
Li Ming said _________ _________ sing some English songs.
She went shopping last Sunday. (改为同义句)
She _________ _________ shopping last Sunday.
We will go somewhere to have a picnic. (改为否定句)
We _________ go _________ to have a picnic.