Only when it is hungry ______ a human being.
| A．a lion will attack | B．a lion should attack |
| C．will a lion attack | D．should a lion attack |
Mr. Frank asked me a question _______ I could go with him to _______ he called the Treasure House the next week.
| A．that; which | B．whether; that | C．whether; what | D．that; where |
—The terrible accident is under investigation.
—Actually, quicker action ______ those workers trapped in the mine.
| A．might have saved | B．must have saved | C．should have saved | D．could have saved |
— Why didn’t you try to finish the composition?
— I tried to , but I could, the bell rang announcing the end of the examination time.
| A．until | B．when | C．before | D．after |
—I don’t have any change with me. Will you pay the bill for me?
—______.
| A．That’s fine | B．Nothing serious | C．No problem | D．Never mind |
So convenient ______ that many people would like to do that.
| A．is shopping on net | B．shopping on net does |
| C．does shopping on net | D．shopping on net is |