[ 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:
Grammar › ViewChoose the sentence with the correct subject-verb agreement.
A. He ate breakfast every morning.
B. He eating breakfast every morning.
C. He eats breakfast every morning.
D. He eat breakfast every morning.
Passive Voice › View
These curtains are so dirty. They must ____ .
A. be cleaned
B. clean
C. cleaned
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
