Ⅰ.选择下面的单词或短语填空
predict, optimistic, definitely, eventually, shape, look out,for a start, on the way out
1.Don't buy this type of bike. It's on_the_way_out.
2.People like to predict their future.
3.He is so optimistic that I have never seen he is sad.
4.—Are you going to have children?
—Oh, definitely.
5.Eventually,_the police caught up with the thief and arrested him.
6.Look_out! The paint is still wet.
7.I am not for the plan. For_a_start,_it is not practical.
8.I want to shape the mud into a rabbit.