落胆: discouragement

the result, effect, consequence / the performance, the accomplishment, the achievement

(rare) bear fruit

disappointment

be disappointed

short, short circuit / a leap in logic (that skips steps), a jump to a conclusion

short (cause a short circuit) / connect (associate) hastily

(university slang) course that be got credit easily

examination, exam, test / quiz

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend