There is no to worry. He is old enough to take care himself.A, difference B, need C, possibility D, sense
So excited _____ that he couldn’t say a word.
---- What’s your opinion about it? ----You can _____at a glance that the building was poorly built.
____ it happens, her birthday is after mine.
It is such a modern machine ______ few of the workers know how to operate.
_____ and I will hit you.