[ Tenses Usage ]
Solar energy _____ the dominant source of power within a decade.
A. becomes
B. will become
C. became
D. will have become
Random Topics:
Grammar and EssayNouns and QuantifiersPresent, Past and Future TensePunctuation and GrammarTag QuestionGrammar - Present PerfectModals of ObligationCountable - UncountableAlthough / DespiteSimple TensesOther quiz:
Vocabulary › Viewto say that someone or something has done wrong
A. imitate
B. delicate
C. accuse
D. rare
Homonyms › View
We have a ___ and a butler in our employ.
a. made
b. maid
London is a great city. _________ is my favorite city.
A. I
B. He
C. She
D. It
Grammar › View
You ______ be a good swimmer to join the rowing team, but you should know how to swim.
A. don’t has to
B. don’t have to
C. doesn’t has to
D. doesn’t have to