HE HAS BEEN ILL SINCE YESTERDAY. THEREFORE, HE ____________THE WIND...
9. He has been ill since yesterday. Therefore, he ____________the windows open last night.
A. mustn’t leave
B. mustn’t have left C. shouldn’t have left D. needn’t have left
9. He has been ill since yesterday. Therefore, he ____________the windows open last night.
A. mustn’t leave
B. mustn’t have left C. shouldn’t have left D. needn’t have left