B
be to do 是表示"注定,能夠"的意思
與be heard to drop結(jié)合就是B了
was to be heard to drop .
C 是用的虛擬,本能聽到卻沒聽到,意思錯了,
D 一定.意思不好,說的是能不能的問題,或許真有人就沒聽到.
一道英語選擇題,請解釋
一道英語選擇題,請解釋
it was so quiet in the classroom that a needle _to drop onto the floor
A .could hear
B .was to be heard
C .could have been heard
D .must be heard
it was so quiet in the classroom that a needle _to drop onto the floor
A .could hear
B .was to be heard
C .could have been heard
D .must be heard
英語人氣：985 ℃時間：2019-08-20 21:40:59
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