【急!】3个改同义句!Heilongjiang is in the north-east of China Heilon

【急!】3个改同义句!
Heilongjiang is in the north-east of China
Heilongjiang is ____ ___ ____.
What's your meaning by doing this
What ____ ____ ___ by doing this
Birds can find food easily in the nature reserve
____ ____ ____ ____ ____ ____ food in the nature reserve
还有一个
He takes an interest in playing cards
He ___ ___ ___ playing cards.