<p>At least in my field, TOEFL can be waived for the application to MIT, as mentioned below here:
[MIT</a> EECS - Frequently Asked Questions](<a href=“http://www.eecs.mit.edu/grad/faqs.html#15]MIT”>http://www.eecs.mit.edu/grad/faqs.html#15)</p>
<p>I also checked the chemical engineering departmental website at MIT. It seems that if you also had your secondary education tutored in English, then TOEFL could be waived as well (which might not be the case for you, as yours was probably in Chinese).</p>
<p>As for your application, especially to tip top schools, I think the only somewhat shaky aspects are your writing and quant scores. You should be fine though, if you also applied to other “easier” decent schools as your safer bets.</p>