[ Vocabulary ]
Much _________ needs to be carried out to explore the possible mutations and complications of the COVID-19 Virus.
A. mutation
B. application
C. technology
D. research
Select your answer:
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Present Tenses › ViewMany governments ___ innovative solutions to address income inequality in recent years.
A. have implemented
B. implemented
C. implement
Grammar › View
He ________ his birthday in two months’ time.
A celebrated
B celebrate
C celebrates
D will celebrate