This maths problem is that one.
My niece cares more for new clothes than anything else in the world, so she is very _______ about what she wears.
------ Who is that man over there? _______ it be our teacher?------ No, it _______ not be our teacher. It _______ be Mr. Zhang.
Everyone in the village knew him, so we had _______ his house.
Does John know any other foreign language _______ French?
------ I heard that as many as 100 people were killed in that coal mine accident?------ Yes, ______ news came as ______ shock to us.