Present Tense for Dentistry

While brushing the teeth, the person first _____ toothpaste onto the bristles of the toothbrush.

• applies

• is applying

• apply

• are applying

The vertical movement of the toothbrush _____ the small pieces of food that get stuck between the teeth.

• cleans

• is cleaning

• clean

• are cleaning

They _____ a party on Sunday afternoon.

• have

• are having

• has

• is having

_____ new diseases appear with the people's change of their lifestyles and environment?

• Am

• Is

• Do

• Does

The advances in medical science this century have certainly helped to save millions of lives, however, they _____ also causing problems.

• am

• is

• are

• do

What _____ dental surgeon deal with?

• is

• are

• do

• does

Prevention _____ a primary focus of dentistry at present.

• become

• becomes

• is becoming

• are becoming

Dental practitioner _____ up-to-date treatment for a wide variety of dental problems.

• provide

• provides

• is providing

• are providing

There are more than 400 theories which _____ to explain the caries.

• try

• tries

• is trying

• are trying

One of the principal causes of dental caries _____ high consumption of sugar.

• is

• am

• are

• do