[ Grammar ]
Sam ______ that the exercise is too difficult, but he ______ hard about the last question at the moment.
A. thinks / is thinking
B. is thinking / thinks
C. thinks / thinks
D. is thinking / is thinking

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Grammar › View____ the popularity of the BPT39 wireless speaker, production will be increased fivefold starting next month
A. On behalf of
B. Whether
C. Moreover
D. As a result of
Sentences and Non Sentences › View
Some cats are very lovable.
A. sentence
B. non-sentence
