The river, ______the bank are covered with trees, is very long.
| A．whose | B．which |
| C．of which | D．which of |
___________in the mountain for a week, the students were finally saved by the local police .
| A．Having lost | B．Lost | C．Being lost | D．Losing |
There are some health problems that, when ____ in time, can become bigger ones later on.
| A．not treated | B．not being treated |
| C．not to be treated | D．not having been treated |
It’s only when he reached the tea-house that _____it was the same place he’d been in last year.
| A．he realized | B．he did realize |
| C．did he realize | D．realized he |
---He’s made _________progress that his parents must be pleased with him.
--- __________________. And he also takes great pride in himself.
| A．so great; So he has | B．such great; So has he |
| C．so much; So he has | D．so much; So has he. |
_________ the necessary equipment, the seriously wounded man had to be sent to another hospital for the operation.
| A．Lacking | B．Lacking of |
| C．For lack of | D．Lacked in |