4.08 Water back Understand /11 4.8.8 Words Explained Must (be) Something is possible. My mother worked all day. She must be tired. Did you hear her speaking Japanese? You must be wrong, Angela doesn't speak Japanese. You didn't eat anything all day. You must be hungry. ← 1 2 3 4 5 6 7 8 9 10 11 12 → ← Previous Understand