[ 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:
Present Perfect Tense › Viewsing in present perfect
A. sing
B. sang
C. seng
D. sung
Verb Forms and Prepositions › View
Choose the correct preposition of time: “She will arrive ____ the morning.”
A. in
B. on
C. at
D. by
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
