If you prefer the red evening dress, you’ll have to pay ________ 30 dollars, because it’s made of silk.— Ok. Here you are.

will be charged has notbeen decided yet

If you listen to me, you ______ take a good rest at once.— OK, I ______ do so.

Three years has _______ since we last _______ each other.

Reading without stop is a ________ pieceof work.