_________surprises us most is that she doesn’t even know _________the difference between the two lies

If you meet with a problem, _____ the guide here and you’ll settle it in time.[ ]

____ the help of man-made satellites卫星, we can know what the weather will be like in the future few days.

— Did you find the missing couple in the mountain yesterday?— No, but we ____ to get in touch with them ever since. [ ]

Hannah ________me; otherwise, other students wouldn’t have known my result of the quiz.[ ]