At last, the boys found themselves in a pleasant park with trees providing shade and_________down to eat their picnic lunch.
| A．to sit | B．sat | C．sitting | D．having sat |
The cakes are delicious. I’d like to have _______ third one as _______ second one I ate was too small.
| A．the, the | B．a, the |
| C．the, a | D．a, a |
Many people agree that ______ knowledge of English is a must in _______ international trade today.
| A．the, an | B．a, 不填 |
| C．the, the | D．不填, the |
In the market, vegetables are sold by _______ kilogram, I mean, by _______ weight.
| A．the; 不填 | B．不填; 不填 |
| C．the; the | D．不填；the |
“Charley Oakley, ______ NBA All-star, hasn’t missed ______ game in the past three years.” “I can hardly believe it.”
| A．an; the | B．a; the |
| C．the; a | D．an; a |
The market for ______ used computers is getting larger and larger as______ years go on.
| A．不填, 不填 | B．the, 不填 |
| C．the, the | D．不填, the |