选择合适的短语,并用所给词的适当形式填空,补全句子.

问题描述:

选择合适的短语,并用所给词的适当形式填空,补全句子.
选择的:look after;look up;look for.
1.Mom,I don’t know this word.()it()in your dictionary.
2.What are you doing under the bed,Jim?I am()my shoes.
3.Don't worry about me.I can()myself.

1.look up
2.looking for
3.look after