--- What happened? I called you several times yesterday evening, but I couldn’t get through.
--- Sorry, my sister and I on the phone all the time．
| A．talked |
| B．have talked |
| C．were talking |
| D．have been talking |
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 |