[ Grammar ]
When I_______ the bookstore this morning, I saw a very interesting book.
A. was browsing
B. have browsed
C. am browsing
D. will browse

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Adjective Suffixes › ViewI didn’t enjoy running the marathon. It was more —– than I expected.
A. challenged
B. challenging
C. challengeful
Modals › View
I looked everywhere but I can’t find Mrs. Smith.
A. She must at home.
B. She must be at home.
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A. could
B. would
C. need to
D. must
Grammar › View
Does the sentence below use a gerund?
Going to the playground is fun.
A. with gerund
B. no gerund
