So difficult ___________ it to live in an English-speaking country that I determined to learn English well.
| A．I have felt | B．I felt |
| C．I did feel | D．did I feel |
Higher temperatures turning the large ice sheet to water would cause ______ rise in sea level worldwide and change ______ weather on earth.
| A．a; / | B．the; / | C．a; the | D．/; the |
Only in this way _________ make progress in our English study.
| A．can we | B．we can | C．we are able to | D．can we be able to |
A cook will be immediately fired if he is found _________ in the kitchen.
| A．smoke | B．smoking | C．to smoke | D．smoked |
_____by one of his fellow soldiers，the wounded man walked slowly across the field．
| A．Supporting | B．Supported | C．Support | D．Been supported． |
Jenny worked hard before the final examination，and it_______．She got an A．
A．showed off B．paid offC．put off D．took off