用括号中所给单词的适当形式填空

【1】His hope is to be a _____ (science)．

【2】There are four ______(factory)around our school.

【3】Nothing in the world is ______(possible)if you set your mind to do it.

【4】It is difficult for me ______(do)this job.

【5】You will never get ______(boring)if you stay with him.

【6】My uncle is _______ (try) to make a new machine.

【7】My father had something important ______(say)．

【8】Don't worry.I can finish my homework by _______(I)．

【9】She was surprised by all the _______(pollute)on the beach.

【10】They would not like ________(live)alone.