The engineers are so busy that they have no time for outdoor sports activities，________ they have the interest.
| A．wherever | B．whenever |
| C．even if | D．as if |
It was _______ he came back from Africa that year ________ he met the girl he would like to marry.
| A．when; then | B．not; until | C．not until; that | D．only; when |
Roses need special care ______ they can live through winter.
| A．because | B．so that | C．even if | D．as |
Sam _____ some knowledge of the computer just by watching others working on it.
| A．brought up | B．looked up | C．picked up | D．set up |
—What do you think of store shopping in the future?
—_______, I think it will exist along with home shopping but will never be replaced.
| A．To sum up | B．Anyway | C．Personally speaking | D．Generally speaking |
Wild animals have been overhunted, and as ____ result, some of them are among the animals in ______danger.
| A．a; the | B．a; / | C．the; a | D．/ ; the |