I believe I understand what you mean to say “我应该做很多事”。 However, your "z" in "zuo" sounds rather like "c" in "cuo", so I would work on your pronunciation a tad. Also, at least to me, the syntax sounds a tad unnatural.

Yeah, I can. Only on mistake, the tone of "做" is No. 4.

“我应该做很多事” Your pronunciations are pretty good as well as your tones. I agree with Taylor that the “做” need more practice. Not only the initial “Z” but the tone should be the Fourth tone instead of the Third.

penso che hai detto " Io devo fare molto" ?

Yeah, sure.