With the effects of global warming, trees their leaves much later in the year.
| A．are losing | B．have lost | C．lost | D．were losing |
Kathy______ a lot of Spanish by playing with the native boys and girls．
| A．picked up | B．took up | C．made up | D．turned up |
I really can't understand ______ her like that．
| A．you treat | B．you to treat | C．why treat | D．you treating |
Never before______ so highly successful in his attempts to forecast the weather accurately on
a small scale．
| A．man has been | B．man is |
| C．has man been | D．will be man |
The scientists predict that if present trends______, women in 400 years will be 2cm shorter
and have healthier hearts．
| A．will continue | B．continue |
| C．are continued | D．will be continued |
Bush, before Barack Obama, _______ Brown a similar gift, a leather bomber jacket．
| A．gave | B．have given | C．would give | D．had given |