The girl, when _____ why she _____ in the exam, just lowered her head and kept silent.
__ was once regarded as impossible has come true.
I have no idea ___.
The reason______ he gave for being absent from school was ______ he had to attend his sick mother at home.
Little Tom hid himself in the place_______ couldn’t be found, _______make her mother annoyed.
The river______ surface used to be covered with waste and rubbish is now taking on a new look.