— The floor is clean and dry now. Who _______?
— Sorry, I don’t know.
| A．mopped it up | B．has mopped it up | C．has mopped up it | D．mopped up it |
She feels unhappy, _____?
| A．doesn’t she | B．does she |
| C．isn’t she | D．is she |
There _______a knife and a fork on the table.
| A．seems to be | B．seem to be | C．are | D．is seeming |
He works hard and is often _________.I hope he will have more _________.
| A．success；successful | B．successful；success |
| C．success；successes | D．successful：successful |
How many trees are there on top of the mountain? _________
| A．Nothing | B．Nobody | C．No one | D．None |
Lucy prefers ________ to __________.
| A．to walk, jogging | B．walk, jog |
| C．to walk, jog | D．walking, jogging |