A.In stead B.In terms C.In comparison D.Compared with
A.if B.as C.must D.should
A.available by B.available to C.acceptable by D.acceptable to
A.unless B.though C.only if D.if only
A.however B.On the other hand C.moreover D.On the contrary
A.and B.but C.or D.nor
A.The case being it B.The case is like this C.Such being the case D.Such is the case
A.be B.is C.being D.been
A.Replying to B.Replied to C.Relying on D.Relied on