21.He will surely finish the job on time___________he's left to do it in his own way.
A.in that B.as far as C.in case D.so long as
22.He is always here; it's ___________you've never met him.
A.unique B.strange C.rare D.particular
23.In recent years much more emphasis has been put____________developing the students' productive skills.
A.onto B.over C.in D.on
