As there is less and less coal and oil, scientists are exploring new ways of making use of ______ energy, such as sunlight, wind and water for power and fuel.
| A．primary | B．alternative | C．instant | D．unique |
_____ two exams to worry about, I have to work really hard this weekend.
| A．Besides | B．With | C．As for | D．Because of |
Eating too much fat can _____ heart disease and cause high blood pressure.
| A．result from | B．contribute to | C．attend to | D．devote to |
_____ we can’t get seems better than _____ we have.
| A．What, what | B．What, that | C．That, that | D．That, what |
Twelve Cubans left the embassy after_____ there for several days.
| A．sheltering | B．sheltered | C．was sheltered | D．had sheltered |
To everyone’s surprise, a lawyer was _____ headmaster of this new school.
| A．named after | B．appointed | C．adopted | D．in the name of |