They have produced they did last year.
| A．twice more grain as | B．twice as much grain as |
| C．twice as many grain as | D．as twice many grain as |
His best known work that is _____ all praise can be seen in the museum.
| A．with | B．beyond | C．without | D．within |
A recent study has ________an unexpected conclusion that the African elephant should be divided into two different species.
| A．kept up with | B．made up with | C．caught up with | D．come up with |
The weather is concerned with all of us because it________us so directly—what we wear，what we do，and even how we feel.
| A．moves | B．guides | C．affects | D．benefits |
I might fail，but________I insist on doing it.I never lose heart.
| A．someway | B．anyhow | C．then | D．meanwhile |
The two countries are going to meet to _______ some barriers to trade between them.
| A．make up | B．use up | C．turn down | D．break down |