She has worked in this factory ______ she came here in 2010.
Mr. Wang often says to her child, “You _______ play with fire(火). It’s dangerous. A. mustn’t B. had better C. needn’t
—Could you please ________us some stories? —OK. A. say B. talk C. tell
My uncle says that it’s his duty ________the patients. A. save B. to save C. saving
As we know, ________ is good exercise and it is necessary for health. A. walk B. walks C. walking
—Must I finish my homework before I go home? —No, you ________. But you ________ finish it before tomorrow. A. mustn’t, must B. needn’t, must C. needn’t, mustn’t