---What did you say to Julia? I saw her crying in the dormitory alone. --- It ______ my fault. We talked happily when I was with her in the classroom.

Swimming alone ____ be ____ dangerous. Do be careful.

Having no enough time to practice, the girl wondered whether she _____ pass the driving test. 

—Is there a fog in the evening ?—There           be . I’ll make a phone call to find it out .

My MP4 player isn’t in my bag. Where        I have put it?