If you want to have perfect white teeth, you ______ ...

[ Modal Verbs in First Conditional ]

If you want to have perfect white teeth, you ______ brush your teeth regularly.

A. may

B. must

C. should

D. might

Select your answer:
A B C D E

Other quiz:

Grammar › View

You won’t get into university __________ harder.

A. unless you don’t study

B. if you study

C. unless you study

Vocabulary › View

Some ___________, such as natural gas and fossil fuel, cannot be replaced.

A. natural resources

B. habitats

C. magma

D. asthma

Vocabulary › View

a soothing, comatose or overexcited state; dream; daze; stupor; daydream

A. lull

B. haggard

C. trance

D. foliage

Simple Present Tense › View

…. everybody join the seminar yesterday?

A. Does

B. Did

C. Do

D. Is