You can only be sure of _____ you have at present; you cannot be sure of something _____ you might get in the future.
A.that; what | B.what; 不填 | C.which; that | D.what; which |
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You can only be sure of _____ you have at present; you cannot be sure of something _____ you might get in the future.
A.that; what | B.what; 不填 | C.which; that | D.what; which |