[ Tenses ]
They (walk) _________ home when they (find) _________ a lost puppy.
A. were walking / found
B. are walking / find
C. had walked / had found
D. walked / found
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Grammar › View‘we _________do our best in this competition.’
A. will
B. is going to
C. shall
Modals and Vocabulary › View
The serene lake was a perfect place for meditation and relaxation. It was calm, quiet, and beautiful.
A. Busy
B. Calm
C. Dirty
D. Noisy
Past Modals › ViewWhen you are almost sure what happened, you use …
A. could have
B. might have
C. must have
D. should have
Grammar › View
it is one of ___ books i have ever had
A. most useful
B. the most useful
C. the most useful than
D. the most useful as