英語選擇題疑問1
英語選擇題疑問1
I have been working there for 15 years,and never before _____my boss so serious.
A did I find B.have I found
請解釋為何選B不選A,
I have been working there for 15 years,and never before _____my boss so serious.
A did I find B.have I found
請解釋為何選B不選A,
英語人氣：756 ℃時間：2020-03-20 18:08:18
優(yōu)質(zhì)解答
parallel tense:I have been --- i have found (first time ever after 15 years).A="did I find" is "past tense".
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