【題目】—_______ sleep do you think is necessary for a Grade 9 student? — 8 hours at least.

A. How often B. How long C. How many D. How much

【答案】D

【解析】

試題句意:你認(rèn)為對(duì)于一個(gè)九年級(jí)的學(xué)生多少睡眠是必要的。至少八個(gè)小時(shí)。A. How often 多久一次B. How long 多久 C. How many多少,加不可數(shù)名詞D. How much 多少,加不可數(shù)名詞。sleep,不可數(shù)名詞,故選D

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