—Oh, My God! I forgot his mobile phone number.
—What a pity! You _______ have written it down on your notebook.
A. mustn’t B. must C. shouldn’t D. should
—Oh, My God! I forgot his mobile phone number.
—What a pity! You _______ have written it down on your notebook.
A. mustn’t B. must C. shouldn’t D. should
D