He advised farmers to choose the best seed-heads ,__________ that had the best color .
| A．不填 | B．ones | C．this | D．the ones |
Steve has to get up at 5:00 A.M. to get to school. ______ this , he has never missed a class.
A. In contrast to B. Apart from C. In addition to D. In spite of
—Has your father returned from Europe yet?
—Yes, but he ______ here for only three days before his company sent him to America.
| A．was | B．has been | C．will be | D．would be |
She started studying medicine at college, but ______ to Business Studies in her second year.
| A．transformed | B．skipped | C．adjusted | D．switched |
If water becomes increasingly scarce in decades ______, water shortage will become a hot issue all over the world.
| A．coming | B．having come | C．to come | D．to be coming |
The elderly need special care in winter, as they are ______ to the sudden change of weather.
| A．sensitive | B．negative | C．flexible | D．sensible |