【題目】I was so familiar with him that I recognized his voice _____ I picked up the phone .

A. while B. after

C. in case D. the instant

【答案】D

【解析】A. while雖然；然而；當……的時候 B. after在……之后 C. in case萬一；D. the instant一……就；

句意：我和他如此熟悉以至于一接通電話我就聽出他了。根據(jù)語境選D。

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