____ is often the case, the teacher has made the teaching plan before the new term.
| A．Which | B．When | C．What | D．As |
_____ in thought completely, he didn’t even know what was going on.
| A．Losing | B．Lost | C．Having lost | D．Having been lost |
The manager introduced the rules that she would like to see _______ the next year.
| A．establish | B．establishing | C．established | D．to establish |
________ ，Mom had a cup of coffee and a few minutes’ rest．
| A．With her housework done | B．With her housework being done |
| C．With her housework doing | D．With her housework to do |
When ______ why he behaved that way at table，he made no reply．
| A．being asked | B．asked | C．asking | D．to ask |
The problems_______ at the meeting tomorrow are really hard to solve．
| A．discussed | B．to discuss | C．to be discussed | D．discussing |