﹣﹣﹣We should try to devote（献身于）ourselves to our country like Yuan Longping.
﹣﹣﹣I think so.He still worked on the research into agriculture（农业）at the age of _________.（ ）
| A． |
eighties |
B． |
eightieth |
| C． |
eighty |
D． |
eighty﹣year﹣old |
Before stamps，people didn't______for the letters they sent，but for the letters they received．（ ）
A．payB．costC．spendD．take
______American people and British people speak the same language，their cultures are quite different．（ ）
A．SinceB．IfC．AlthoughD．Because
Students_______enjoy the colorful school life if they study at home instead of going to school．（ ）
A．mustn'tB．can'tC．mustD．can
Now all Chinese couples______to have two children．（ ）
A．allowB．allowed
C．are allowedD．were allowed
Water is important to______，so there are many water festivals around the world．（ ）
A．everyoneB．nobodyC．somebodyD．something