"我今天必须要完成这个工作。"

Translation: I must finish this work today.

[julykix]

consider: I must get this job done today

[Patrick_Dark]

I have to wonder what the purpose of "要" is here; it seems redundant to have "必須要".

[FuCnSW]

The same thing. It depends on personal habit.

要=必須=必須要=得=一定

But 要 can have different application in other sentences. The rest of words only have one meaning.

[.Alex_]

you can say that without 要 and the meaning of sentence will not change

[beaudanner]

I must finish this job today. (same diff) ugh... It's impossible to test out with discrepancies like these.

[daal39]

do it on the app…

[DominicYoue]

Today I must finish this work also makes sense

[Julia8031]

'by today' should also be accepted

[KX3.]

No, that'd be 今天之内.

[psqu6jbd]

How about "I need to complete this work today"

[Tamrin164940]

I have probably done this 30 times now, the app won't let me get past question

[bighorsemonkey]

This work？ The first time I have heard this expression

[bichyrichy]

duodingus!