23. Often he _________ sit for hours doing nothing at all when he was in low spirits.
| A．should | B．would | C．might | D．Could |
Don’t be discouraged. ______ things as they are and you will enjoy every day of your life.
| A．Taking | B．To take | C．Take | D．Taken |
The poor man , ________，ran out of the dark cave.
| A．tiring and frightened | B．tired and frightened |
| C．tired and frightening | D．tiring and frightening |
The stone bridge __ _last year is very beautiful.
| A．built | B．was built | C．being built | D．to be built |
Come and see me whenever ___________.
| A．you are convenient | B．you will be convenient |
| C．it is convenient to you | D．it will be convenient to you |
Tom raised his handsto say something, but he remained silent in the end.
| A．even if | B．as if | C．so that | D．now that |