Simple Present Tense

Dentists _____teeth to prevent cavities.

• cleans

• cleaning

• clean

• is cleaning

• are clean

Fluoride ______ strengthen tooth enamel.

• help

• helps

• helping

• is help

• are helps

How often _____ you brush your teeth ?

• do

• does

• are

• is

• have

Tooth decay ______ when bacteria produce acid in the mouth.

• occur

• occurs

• occurring

• is occur

• are occurs

Regular dental check -ups _____ essential for maintaining oral health.

• is

• are

• be

• being

• been

A toothbrush with soft bristles _____ less damage to gums.

• cause

• causes

• causing

• is cause

• are causes

Dental floss _____ remove plaque between teeth effectively.

• help

• helps

• helping

• is help

• are helps

_____ sugar consumption increase the risk of tooth decay ?

• Do

• Does

• Is

• Are

• Have

Dentists recommend that patients ____ their teeth twice a day.

• brushes

• brush

• brushing

• is brush

• are brush

Good oral hygiene _____ prevent many dental problems.

• help

• helps

• helping

• is help

• are helps