make vs. do

[EL]

English Error, Elementary Level

ESL/EFL Test #18 "Cat and mouse", question 2

The mouse was very frightened and tried to do itself smaller hoping the cat couldn't see it.

(a) mouse
(b) frightened
(c) do

English Error, Elementary Level

ESL/EFL Test #18 "Cat and mouse", answer 2

The mouse was very frightened and tried to make itself smaller hoping the cat couldn't see it.

Correct entry: make
The error was: (c) do
_________________________

right answer is?

[MrPedantic]

Hello EL,

The correct answer is "make". (The test is to identify the mistake in the sentence; and the mistake is "do", which should be replaced with "make".)

Best wishes,

MrP