My parents don't mind what job I do _____ I am happy．
| A．even though | B．as though | C．as long as | D．so that |
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 |
Not until the early years of the 19th century ________ what heat was.
| A．man did know | B．did man knew |
| C．didn't man know | D．did man know |