作业帮2.I took him an hour to work out the problem .( 同义句 )4.She has to finish the work by 5 o’clock .( 改为否定句 )___________________________________________________
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2.I took him an hour to work out the problem .( 同义句 )4.She has to finish the work by 5 o’clock .( 改为否定句 )___________________________________________________
2.I took him an hour to work out the problem .( 同义句 )
4.She has to finish the work by 5 o’clock .( 改为否定句 )
___________________________________________________
2.I took him an hour to work out the problem .( 同义句 )4.She has to finish the work by 5 o’clock .( 改为否定句 )___________________________________________________
2.He spent an hour working out the problem.
4.She doesn't have to finish the work by 5 o’clock
He spent an hour working out the problem .
She doesn't have to finish the work by 5 o'clock.
He spent an hour working out the problem.
She doesn't have to finish the work by 5 o’clock.
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专业回答，值得信赖！
2. He spent an hour (in ) working out the problem.
4. She doesn't have to finish the work by 5 o'clock.