Both of _______ heard a loud noise .It was _______ thunder.
-- _____ classes are there in your school? –Thirty.
--_____ today? –It’s Monday.
----Are there ______ books in the box? ---Yes, there are ______.
--Sit down, please.--___________.
Bill said nothing could stop him ______ his dream. A. to achieve B. from avoiding C.from achieving