Everything comes with ________price; there is no such _______ thing as free lunch in the world.
| A．a , a | B．the , / | C．the , a | D．a , / |
.“______ twenty dollars a big sum to her?” “I suppose so.”
| A．Will be | B．Is | C．Are | D．Were |
.Three hours ______ enough for us to finish the task.
| A．are | B．has | C．is | D．Were |
.Most of his savings ______ in the Xin Hua Bank.
| A．has been kept | B．is being kept | C．have kept | D．have been kept |
.All that can be done ______.
| A．has done | B．has been done | C．have done | D．have been done |
.One or perhaps more pages _______.
| A．is missing | B．has been missed | C．are missing | D．was missing |