You __________ tell anyone about this — it’s a secret.
| A．needn’t | B．mustn’t | C．couldn’t | D．wouldn’t |
Our research has focused on a drug which is so _____ as to be able to change brain chemistry.
| A．powerful | B．influential | C．monstrous | D．vigorous |
He often dreams of going_____.
| A．aboard | B．abroad | C．board | D．abandon |
The boy slipped out of the room and headed for the swimming pool without his parents' _____.
| A．command | B．conviction | C．consent | D．compromise |
In fact, _______ one cause that leads to the problem.
| A．cattle is | B．cattle are | C．cattles are | D．the cattles are |
I found her sitting in the corner, reading _____ newspaper, with _____ in her eyes.
| A．a, tear | B．a piece of, tears | C．a, tears | D．a piece of, tear |