meaning of "promised to remember"

[Misskhan]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #577 "Corporate Culture (4)", question 3

"I assure you that I will remember how hard you worked last month." In this sentence, Mrs. Jones ......... John's efforts.

(a) struggled to accept
(b) promised to remember
(c) wavered about remembering
(d) forgot to mention

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #577 "Corporate Culture (4)", answer 3

"I assure you that I will remember how hard you worked last month." In this sentence, Mrs. Jones promised to remember John's efforts.

Correct answer: (b) promised to remember

Your answer was: incorrect
"I assure you that I will remember how hard you worked last month." In this sentence, Mrs. Jones struggled to accept John's efforts.
_________________________

what is the mean of "promised to remember"

[Mister Micawber]

.
It is not an idiom. Please use your dictionary to find the definitions of 'promise' and 'remember'.
.
_________________
Native English teacher at Mister Micawber's