Listen! Helen is singing in the classroom.—It _______ be Helen. She has gone to Shanghai.

My teacher inspired ____ a summer course to improve my writing skills. [ ]

Hong Kong was so busy over the Spring Festival that all the hotel accommodation was full. She phoned several hotels but none of them had a _________ room.

It was because of his illness _____ the meeting had tobe put off.

Helen had to shout _____ above the sound of the music. [ ]