I don't know whether he is( ) to .he somtimes makes things worseA.possible B.able C.afraid D.easy

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Idon''tknowwhetherheis()to.hesomtimesmakesthingsworseA.possibleB.ableC.afraidD.easyIdon''tknowwhetherh

I don't know whether he is( ) to .he somtimes makes things worseA.possible B.able C.afraid D.easy
I don't know whether he is( ) to .he somtimes makes things worse
A.possible B.able C.afraid D.easy

I don't know whether he is( ) to .he somtimes makes things worseA.possible B.able C.afraid D.easy
填:B.able
be able to 能够
I don't know whether he is (able ) to.后省略了动词原形及宾语:do it /help
句意:我不知道他是否能帮上忙.他有时把事情弄得更糟.