A.I bought | B.I bought it | C.which I buy | D.that I bought it |
A.I think it is | B.I think which is | C.which I think it is | D.which I think is |
A.if possible | B.if any | C.if ever | D.if necessary |
A.If so | B.When necessary | C.On condition that | D.Believe it or not |
A.Sooner or later | B. Once in a while | C.To be exact | D.Believe it or not |
A.Who;to be | B.Who;will be |
C.Whom;to be | D.Whom;will be |
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