Don't be discouraged ____you have fallen behind othersA.whether B.as if C.even if D.however

Don't be discouraged ____you have fallen behind othersA.whether B.as if C.even if D.however
Don't be discouraged ____you have fallen behind others
A.whether B.as if C.even if D.however

Don't be discouraged ____you have fallen behind othersA.whether B.as if C.even if D.however
C.even if
即使你已经落后别人了,也不要灰心
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A是否你已经落后别人了,也不要灰心
B似乎你已经落后别人了,不要灰心
D然而你已经落后别人了,也不要灰心