7 Complétez ces deux dialogues à l'aide de can't, must ou may.
a. "I'm sure Joe's at the match." "He
yet?" "He
be there, he hates football." "Then why isn't he home
......... be hanging around with friends. He always does that on Sundays."
b. "I'm trying to phone Jim but he doesn't answer. He....
just left his house. He... be sleeping." "He
...be sleeping." "This is impossible! I have
......not hear the telephone, then."