<p>You still have quite some time before you absolutely have to ask for a recommendation. Make good relations with your humanities teachers this year. Fix whatever the problem is. Recs from senior year are completely valid. Regardless, you should not feel shy in asking your teachers about recs. Just because you may have not been stellar doesn’t mean they won’t write you one. </p>
<p>Also, humanities is a fairly broad term when it comes to MIT. Admissions will accept recs from humanities, social studies (including psychology), English, or foreign language teachers. There must be one teacher who’ll write you an above average rec. Any teacher you’ve had should know you well enough for a rec. How big could your classes have been? Take a chance and ask. Don’t refrain from applying because of this :)</p>