—Hello, could I speak to Mr. Smith?—Sorry, wrong number. There isn’t _______ Mr. Smith here.
Only when the war was over ____ return to his hometowns.
He suggests we ____ to the cinema at once, otherwise we ____ late.
Come and see me whenever ____.
In the ant city, you will see many problems _____ in this way.
From his _______expression, we can guess that the problem maybe was quite _______.