Read the following passage then choose the best answer:

Secondary school students should wear casual clothes

I think It is necessary for secendary school students to wear casual clothes when they are at school. Firstly, wearing casual clothes makes student ......(31)......comfortables.

Secondly, wearing casual clothes gives students....(32).....of choice (sizes, colors........). Thirdly, wearing casual clothes makes students feel self- confident when they are...(33)...their favorite clothes.

Finally, wearing casual clothes makes school more colorful and...(34).....

Therefore, students in secondary schools should wear casual clothes.

Firstly, wearing casual clothes makes student ......(31)......comfortables.

A. felt

B. feeling

C. to feel

D. feel