22.I’m terribly sorry to turn you down this time, but I promise I will ________ to you next time.
The reason_______ he didn’t come was that he was injured.
There is no doubt _________ the world climate has been changing in recent years.
Will you help him________ you see an old man in trouble ?
I usually do my homework after dinner until 10 pm, ______ is my bedtime.
We are told that more new teaching buildings ________ next year.