Topics: Modal Auxiliaries
To help protect our oceans and sea life, we ______ solve our plastic waste problem. (obligation)
A. must
B. should
C. may
Select your answer:
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Modals of Obligation and Permission › ViewNo one _____ swim in the local swimming pool last summer because it was closed for repairs.
A. can
B. should have
C. could
D. couldn’t have
Idioms › View
To not be able to speak or move because of fright or worry is the same as to ___ up.
a. keep
b. freeze
c. hang