2.The car wasn't a success, so they decided to work a new model.
Answer The car wasn't a success, so they decided to work on a new model.

3.The books used in our school published in the USA.
Answer The books used in our school were published in the USA. The books used in our school are published in the USA.

4.If you don't know the meaning of a word, look up in the dictionary.
Answer If you don't know the meaning of a word, look it up in the dictionary.

5.She was little late, but still in time for the closing session.
Answer She was a little late, but still in time for the closing session.

6.Young boy finally plucked up courage to invite his beautiful classmate to    dinner.
Answer The young boy finally plucked up courage to invite his beautiful classmate to dinner.

7.You shouldn't live memories of your childhood.
Answer You shouldn't live on memories of your childhood.

8.The girl was dressed in blue head to foot.
Answer The girl was dressed in blue from head to foot.

9.When they looked through the window, saw a boy hiding behind a tree.
Answer When they looked through the window, they saw a boy hiding behind a tree.

10.Don't fill the glasses to brim.
Answer Don't fill the glasses to the brim.