A.the; a | B.a; a | C.the; 不填 | D.a; 不填 |
A.that | B.what | C.whether | D.which |
A.comes; comes | B.will come; will come | C.comes; will come | D.will come; comes |
A.fortunately | B.luckily | C.unfortunately | D.gradually |
A.causing | B.being caused | C.to be caused | D.to have caused |
A.all; help | B.what; to help | C.that; help | D.that; to help |
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