On my way home, I saw a young man with _____ shoulders trying to find out how _____ the river is by walking across it.
The little girl was unhappy_________her picture-book broken.
.—Are my clothes too casual? —No. You can go_________you are.
Please turn down the music, _________our neighbors next door will be disturbed.
In summer, food will go bad if_________in room temperature.
.QQ, _________you can chat with your friends, makes communication easy.