Grammar / B1 Grammar lessons and exercisea / Modal verbs of deduction: Must, may, might, could, can’t
Complete the dialogues using: must, might, might not, or can’t.
Dialogue 1:=> A: Someone is knocking at the door. B: It <1> be the pizza delivery man. I ordered a pizza. A: I know you ordered a pizza. But it <2> be him, because you ordered the pizza five minutes ago. B: Yes, you are right. Then it <3> be your sister. A: No, it <4> be my sister, she's out of town. B: Well, then just open the door; it <5> be important.
Dialogue 2:=> A: Why don't you tell me what the matter is with you? B: Well, I should tell you something and I think you <6> like it. A: Come on! Tell me what it is. It <7> be that bad. B: I don't know. I'm afraid you <8> react badly. A: Then I'm sure it <9> be serious. Please, tell me. B: I saw Lindsey holding hands with another man. A: What? B: Please, I know you <10> be upset right now, but... A: Dude, Lindsey and I broke up more than a year ago. Didn't you know?