_____ in thought completely, he didn’t even know what was going on.
| A．Losing | B．Lost | C．Having lost | D．Having been lost |
I don’t want to express any opinions on the plan until it has been _________.
| A．tried out | B．watched out | C．come out | D．let out |
---When did he meet his wife for the first time？
---It was _________ he came back from Africa that year _________ he met his wife.
| A．when; then | B．not until; that | C．not; until | D．only; when |
The winner of the Grand Slams said that he had owed his success to many people, his parents_________.
| A．after all | B．by chance |
| C．on purpose | D．in particular |
Do let your mother know all the truth; she appears _________ everything.
| A．to tell | B．to be told |
| C．to be telling | D．to have been told |
Our monitor was absent. Otherwise I _________ the chair.
| A．would not take | B．didn't take |
| C．hadn't taken | D．wouldn't have taken |