How is that, Mary?— I wonder ________ it takes to be a good teacher beyond patience and a great knowledge of kids. [ ]

Swimming alone ____ be ____ dangerous. Do be careful.

Tom wants to be another Obama after he graduates from school. —That sounds great, but how can he ____ a person like him if he goes on like this?[ ]

Do you know if Tom ________to the concert— I’m not sure, but if he________, I’ll go to the concert with you.

─ Look, Stella is there!─ That ______ be her. She doesn’t like singing.