A recent study has come up with _____ unexpected conclusion that ____ Africa elephants should be divided into two different species.
| A．a, the | B．an, the | C．an, an | D．the, the |
The conference has been held to discuss the effects of tourism ______ the wildlife in the area.
| A．in | B．on | C．at | D．with |
The International Red Cross is ______ non-profit organization that cares for the wounded, sick and homeless in wartime, and victims of _____ natural disasters.
| A．the; the | B．a; the | C．the;不填 | D．a; 不填 |
_______ he says, I won’t believe him since I know he is a big liar.
| A．No matter what | B．What | C．Anything that | D．All that |
The bike hit the tree ______ I could get off.
A when B before C until D while
That evening ____Smiths sat before a bright fire and had___nice supper.
| A．X,a | B．the ,a | C．X,X | D．the,X |