Expression: to be pleased with

[Melody]

English Grammar Tests, Elementary Level

ESL/EFL Test #91 "Using Prepositions", question 8

Mary is so pleased ......... her students' grades this past year.

(a) for
(b) with
(c) at
(d) along

English Grammar Tests, Elementary Level

ESL/EFL Test #91 "Using Prepositions", answer 8

Mary is so pleased with her students' grades this past year.

Correct answer: (b) with
_________________________

I want to get an explanation.

Melody

[Mister Micawber]

.
To be pleased with-- I am pleased with my TOEIC results.

With is the correct preposition to use with pleased in the test question; the other prepositions offered are inappropriate.
.
_________________
Native English teacher at Mister Micawber's