[ Grammar and Sentence Structure ]
. Select the proper verb form:
A. Trees helps clean the air
B. Trees help clean the air
C. Trees helping clean the air

Random Topics:
Present Simple PassiveThere is, There are, Some, Anya, an, the, zero articleAdjectives, ING - EDAdverbial Clauses of Reason / CauseHow many / How much - Is there / Are thereObject PronounModal Verb in Passive VoicePrepositions of Location, Movement and TimeIntermediateOther quiz:
Tenses › ViewThey ___ to the museum before, so they decided to go somewhere else.
A. had been going
B. had gone
C. were going
D. go
Grammar and Vocabulary › View
. He drives _______ (good).
A. good
B. well
C. better
D. best
Grammar › ViewThe caves are ________ small. We can’t go in.
A. enough
B. too
C. not enough
Grammar › View
Can I get you something ______?
A. to drink
B. drink
C. drinking
D. drinks
