【正文】
rised David didn’t apply for the job. He ______ have seen the advertisement. must can’t ?Complete the sentences with must, can’t or might. 3. “ Where’s Sam?” “ I don’t know. He _______ have gone to the meeting. 4. I don’t know why the manager didn’t reply. He _______ not have received our letter. 5. Jackie looks happy. They ________ have increased his salary. 6. The secretary wasn’t listening. She _______ have heard what I said. might must can’t might