[ Grammar ]
The castles ___________ as homes by kings and queens.
A. was used
B. were used
C. is used
D. are used

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Grammar › Viewhe doctors’ surgery was closed on Sunday.
A. Singular
B. Plural
Comparisons › View
For each group, choose the correct sentence.
A. City children play less freely on the streets because of crowded traffic.
B. City children play more freely on the streets because of crowded traffic.
Grammar › ViewYou’re soaking wet. You ___________ have gone out in the rain.
A. would
B. shouldn’t
C. should
D. none
Modal Verbs › View
Sarah didn’t contact me. She _____ have got my message.
A. couldn’t
B. must
C. can
D. should