Circus tigers, although they have been tamed, can _____ attack their trainer.
| A．unexpectedly | B．deliberately |
| C．reluctantly | D．subsequently |
The training equips the students with ______ full understanding of first aid, which can make ______ real difference.
| A．不填; the | B．a; a |
| C．不填; 不填 | D．the; 不填 |
--- Does Mike always go on holiday together with his sister?
---- _________. If he has his holiday the same as she, then they go together.
| A．It’s his guess | B．It’s up to you |
| C．That’s settled | D．That depends |
Children like to _____ what they have but others don’t have, which makes them proud.
| A．cheer up | B．give up |
| C．show off | D．put off |
_____ a reply, I decided to write another letter.
| A．Not receiving | B．Not received |
| C．Not having received | D．Having not received |
We were having a picnic when _______ there came a downpour, which was really a wet blanket.
| A．all at once | B．in addition |
| C．in return | D．as well |