So absorbed in his work ____________that not a sound ___________.

____-Maria will come to the party makes no difference

What are you going to give your mother for her birthday—I’m not sure. But I’ll buy her _______.

Can I get out at noon?–No. Our school rules state that no student ____ be allowed out at noon, unless he has a request form.

Lao Li has made many inventions because he is a very ______ person.