It is ten years since we ________ each other last time．
| A．see | B．have seen | C．saw | D．had seen |
.
. Few visitors leave Rio feeling _________.
| A．disappointing | B．to disppoint | C．disappointed | D．being disppointed |
.
He made a big mistake, and _________, he lost his job.
| A．as a result | B．as soon as | C．in case | D．even if |
.
The forest guards often find campfires that have not been _________ completely.
| A．put away | B．put out | C．put up | D．put off |
.
My mother ______ live in the country by herself, but now she got used to ______ together with us in the city.
| A．used to; live | B．got used to; living | C．used to; living | D．was used to; live |
.
Going on a trip to a far-away destination _________ be expensive and difficult, but it is very interesting.
| A．can | B．must | C．should | D．will |