[ Grammar ]
Scientists are looking at … possibilities
A. some
B. any

Random Topics:
Continuous TensesAdverbial Concession ClausesAdjectives & PrepositionsAdverbs, Modals, Preposition of timeUncountable NounsSports VocabularyHomophone & HomonymSimple Present and Past TensesGerunds in SentencesCan, Could, May, MightOther quiz:
Prepositions after Verbs › ViewDon’t laugh _____ me! I’m doing my best!
A. about
B. at
C. with
Sentence Structure › View
She enjoys swimming, biking, and running.
A. Complete
B. Fragment
C. Run-on
Vocabulary & Grammar › ViewHow can you let such a silly incident ________ your friendship?
A. wreck
B. to wreck
C. wrecking
D. that wrecks
Tenses › View
The drizzle ____ continuously this morning from 6 AM to 9 AM.
A. fell
B. falls
C. is falling
D. will fall
