They did not know where they from.
A. come
B. had come
C. has come
D. have come
E. none of them
UIUSUMMERইংরেজি - গ্রামার ও ভোকাবুলারিTense and Sequence of TenseTense and Sequence of Tense (Topic Practice)UIU - ⚡ অনলাইন প্রশ্নব্যাংক দেখুন 💥
সঠিক উত্তরঃ
B.
had come
Explanation:

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