Look! There are some birds _______ in the sky. They are very beautiful.
| A．to fly | B．fly |
| C．flying | D．flown |
—How _______ do you chat with your aunt on the Internet?
—Now and then, though we don’t have much in common.
| A．often | B．soon | C．long | D．much |
The man didn’t see the sign “ No smoking”, for _______ of his eyes was near-sighted.
| A．both | B．none | C．neither | D．either |
The woman boss told the customer that it was none of her business and ordered that he _____ away at once.
| A．went | B．go | C．goes | D．going |
Mr Li has some trouble sleeping, so drinking a glass of milk before going to bed every night is his common ________.
| A．knowledge | B．experience | C．practice | D．duty |
He succeeded in gaining a gold medal in Beijing Olimpics and all his efforts _____ in the end.
| A．made out | B．paid off | C．lit up | D．looked up to |