—Dad,whyshouldIstop

問題詳情：

— Dad, why should I stop _______ computer games?

       — For your health, my boy, I’m afraid you _______.

A. to play; must B. playing; have to C. to play; can D. playing; may

【回答】

B

知識點：動詞和動詞短語

題型：選擇題