______ asked to help me with my lessons, he always refused, saying he was too busy.
A．Whatever B．Whenever C．Whoever D．However
B

試題分析：考查詞義辨析：A. Whatever無論什么B. Whenever無論什么時(shí)候C. Whoever 無論是誰D. However無論怎樣，句意：每當(dāng)沒請(qǐng)求幫助我的英語的時(shí)候，他都是拒絕，說自己太忙了。選B。
點(diǎn)評(píng)：詞義辨析考的是學(xué)生的基礎(chǔ)詞匯知識(shí)，了解每個(gè)選項(xiàng)的含義是做好此類題型的關(guān)鍵，解答此類習(xí)題，首先要求學(xué)生有一定的詞匯量，句意理解后便可作答，所以平時(shí)的基礎(chǔ)知識(shí)記憶，詞匯積累是解答好這種題的關(guān)鍵。
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