now people are getting ill more easily because of _pollution_____(pollute)
we should recycle those _usable_____(有用的） things.
i'll go shopping with you _unless_____(除非） it rains tomorrow.
the news reports some factories are _producing_____(produce) some poisonous rice.
i think we can find a good way to ___solve____(解决）the difficuly problems.
if i am not rich ,i am not going to buy a house.(同义句转换）
—Unless——i am rich ,i am not going to buy a house.