They were busy with their schoolwork. They spent time helping the elderly in the retirement home.
A. They were busy with their schoolwork, but they still spent time helping the elderly in the retirement home.
B. They spent time helping the elderly in the retirement home, so they were busy with their schoolwork.
C. They were busy with their schoolwork, and they spent time helping the elderly in the retirement home.
D. They spent time helping the elderly in the retirement home, or they were busy with their schoolwork.

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Grammar › ViewInsert the correct apostrophe in the following sentence: “The cats whiskers were twitching.”
A. The cat’s whiskers were twitching.
B. The cats’ whiskers were twitching.
C. The cats whiskers’ were twitching.
D. The cats whiskers were twitching.
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I want to join the campaign for preserving the environment this summer _____ I don’t have time.
A. although
B. because
C. when
D. but
Grammar › ViewWe _______ have a grammar exam next week. Let’s study!
a. may
b. may be
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English Grammar. Select the best answer.
Jenny __________ never late for work.
A. Am
B. Are
C. Were
D. Is
