She was moving out of her old apartment she suddenly realized that the key to the new apartment wasn’t on her.
| A．until | B．once | C．when | D．before |
Because of ______ high demand for Type AB blood, ______ supplies of it are usually limited.
| A．the; the | B．不填; 不填 | C．不填; the | D．a; the |
In _____ preparation for the launching of Shenzhou Ⅶ, scientists need ______ knowledge of weather changes.
| A．the; the | B．a; ∕ | C．∕; a | D．the; a |
Now that Tom hates_______ school, the school becomes_______ prison to him
| A．a；a | B．/；a | C．a；/ | D．/；/ |
He is in ____ control of the company. I mean, the company is in ____ control of him.
| A．the; / | B．/; the | C．the; the | D．/; / |
Richard Powers’ The Echo Maker, ____ novel set in ___ small town of Kearney, Nebraska, US, has won the 57th US National Book Award for fiction.
| A．the; the | B．a; a; | C．a; the | D．/; the |