[ Grammar ]
If we ……… littering, the environment will be polluted.
A. turn off
B. go on
C. go to
D. turn on

Random Topics:
Conditionals (0 - 1 - 2)Modal Verb, Passive VoiceComparisonsSimple and Continuous Present TenseModals and Active and Passive VoiceArticles and NounsTime ExpressionsSentence and FragmentComperative and SuperlativePersonal pronouns + possessive adjectives + Introgative pronounsOther quiz:
Grammar › ViewMany people say that Venice is … city in the world.
A. More beautiful
B. The most beautiful
C. Most beautiful
D. Beautiful
Simple Past Tense › View
My classmate _____________ the classroom just now.
A. cleans
B. clean
C. cleaned
D. cleaning
Tenses › ViewWhich one is NOT a type of Present Tense?
A. Simple Present
B. Present Continuous
C. Present Perfect
D. Future Perfect
Mixed General Quiz › View
A person who acts is an act___.
a. er
b. or
c. ar
