[ Grammar ]
Complete the sentences with the gerund or infinitive form of the verb in parentheses.
It’s difficult ____________________________ a ball while swimming at the same time. (throw)
A. to throw
B. throwing
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A. could
B. can’t
C. mustn’t
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Robert is French but he lives in Dubai. He has been there __________________.
A. for three years
B. since three years
C. during three years
D. three years ago
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(A) response
(B) responsible
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The room is ________ because it is crowded. Please open the windows to let in some fresh air.
A. Stale
B. Cool
C. Stuffy
D. Noisy