Complete the sentences. Use must, can't, might or could. 1. I don't know where Danny is. He........ be at Luke's place. 2. That bike ....... be Clare's. She hasn't got one. 3. It's only got six legs, so it ........ be a spider. 4. Paul's won the poetry competition. He .......... be pleased. 5. These earrings.......... be made of gold, but I'm not sure. 6. You didn't get much sleep last night. You ........... be tired.