The magician picked several persons from the audience and asked them to help him with the performance.
| A．by accident | B．on occasion | C．at random | D．on an average |
At the Olympic Games, only the athletes who have reached the agreed standard for their event will be ______ as competitors.
| A．deserted | B．discussed |
| C．admitted | D．advertised |
The scientist went to draw some money in the bank in a rush, onlythat he failed to take the ID card.
| A．finding | B．to find |
| C．found | D．having found |
—Where did you come across your old classmate Jane?
—It was in the supermarket _________ she worked _________ I came across her.
| A．where; when | B．that; when |
| C．that; that | D．where; that |
In the lecture, little Tom kept silent all the time unless _________ to express his opinion.
| A．he invited | B．he is invited |
| C．invited | D．being invited |
— How do you like the new book?
—To be honest, it is a little difficult________.
| A．understood | B．being understood |
| C．understanding | D．to understand |