[ Grammar ]
During the pandemic, to …………………… everyone’s safety the airlines insisted on all passengers having either a negative PCR test or to be vaccinated.
A. import
B. ensure
C. remove
D. produce
Select your answer:

Random Topics:
Vocabulary & GrammarPresent Simple/AffirmativeHow many / How much - Is there / Are therePassive Voice and Relative ClausesConditionals (0 - 1 - 2)Past Perfect Simple TensePassive Voice Present SimpleTOEIC Grammar and Vocabulary ReviewPhrasal Verb With TakeNouns as AdjectivesOther quiz:
Grammar › ViewChoose the correct sentence: Simple Past – time expressions
A. My family ate pork next month
B. This party was great!
C. I drank apple juice last month
D. She went to the cinema.
Articles › View
We’re going on holiday with … Robinsons.
A. an
B. a
C. the
D. none
