Your immune system works more __________ when you get enough ...

[ Grammar ]

Your immune system works more __________ when you get enough rest.

A. calmly

B. effectively

C. calm

D. effective

Select your answer:
A B C D E

Other quiz:

Phrasal Verbs › View

A man was knocked ______ by a car and taken to hospital.

A. over

B. out

C. down

Modal Verbs › View

Identify the modal verb in the following sentence: “She could have been more careful with her words.”

A. could

B. have

C. been

D. careful