英语的句型转换

Mr Li lived here three years ago.( 改为现在完成时)
Mr Li ( has )( lived )here ( for )( about )three years .
He studied harder so that he could catch up with others.(同义句)
He studied harder (in )( order )(to )catch up with others.
I am in great need of your help.(同义句)
I need( your)( help )( much ).
I don't know what I should do.(同义句)
I don't know what (to )( do ).
He may give away some gifts to the kids.(同义句)
Some gifts ( may )( be )( given )away to the kids.
I spend half an hour reading English every morning .(同义句)
It ( takes )me half an hour ( to )( read )English every morning