Give the correct form of the verbs in the brackets to complete the sentences
Our pool pump _________(not/work) properly before the storm.
Câu diễn tả hành động xảy ra trước 1 hành động trong quá khứ tiếp tục cho tới thời điểm đó=>quá khứ hoàn thành tiếp diễn
Công thức: S + had (not) + been + V-ing
=>Our pool pump had not/hadn’t been working properly before the storm.
Tạm dịch:Cho đến trước khi bão đến, máy bơm nước vào bể đã không làm việc hiệu quả.
Give the correct form of the verbs in the brackets to complete the sentences
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