Question: must be in a sentence?
Answer: She must be very uneasy about you. 1K. 393. We must not be late. 898. 299. You must be mistaken. 539. 223. He must have changed clothes during the night. 469. 228. That must make you about five years old. 441. 138. That must have been really difficult for you. 372. 198. But you must help me. 290. ...  He must be devastated. 267. 148.