It_____ years ago when the incident took place, and I nearly forget it.
| A．would have been | B．should have been |
| C．ought to have been | D．must have been |
. He is clever and has a____________for learning language.
| A．gift | B．mind | C．heart | D．skill |
The storm is moving slowly____________.
| A．eastern | B．to eastern | C．to eastwards | D．eastwards |
. He made up his mind to devote his life____________the river____________polluted.
| A．to prevent, to be | B．to prevent, from being |
| C．to preventing, to be | D．to preventing, from being |
. Many people think that it is ____________making such an experiment.
| A．worthwhile | B．worth | C．worthy | D．valuable |
. One day I ____________a newspaper article about one in six European mammal species threatened with extinction.
| A．came at | B．came across | C．came about | D．came after |