Question

She will not succeed undress she (work) harder.
(Put correct tense of verb)

Answer 1

Answer:

she will not succeed unless she works harder

Answer 2

Answer:

'works' is the correct answer.

Reason being, when we conjugate the verb work, we need to keep in mind how will it go with the pronoun 'she'. Also something won't happen in the future (example, She will not succeed...) unless something is done in the present to change the condition of the future (example, ...unless she works harder).

Thanks and have a great day! ;)