It is _____ that Professor Smith will give us a lecture tomorrow.
__________ Tom didn’t pass the exam made his parents very upset.
She is not certain about __________ she has done anything wrong.
People started to dig in the area for treasure, __________ much damage.
The Chinese language differs__________ Western language in __________ it uses characters which stand for ideas, objects or deeds.
When __________ why he was late again, Jack didn’t say anything.