[ Past Simple vs Past Continuous ]
While I was swimming in the river, I ___________(see) some frogs.
A. seen
B. saw
C. seed
D. was seeing
Select your answer:
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Grammar › ViewThe porridge _____________________ cooled down.
A. has
B. have
C. having
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He stopped ______________ because it began to rain.
A. playing tennis
B. to pley tennis