练习二十一
agreement; gladness; collection; illness; prevention; advertisement;
development; decision; kindness; gentleness; sadness; sickness;
education; organizagtion; improvement; usefulness; movement; happiness;
has cured illness; poor areas for medical tratment; is performing operation on ;
proud have helped; you keep doing; grateful to because of donations;
used to drink; Used to; have lived am used to; used to live; are used to living;
operating; attacks; patient; improving; blind;care; indeed; education;
international; medical;
B be; C going; C blindness B not; A are; B drink
agreement; gladness; collection; illness; prevention; advertisement;
development; decision; kindness; gentleness; sadness; sickness;
education; organizagtion; improvement; usefulness; movement; happiness;
has cured illness; poor areas for medical tratment; is performing operation on ;
proud have helped; you keep doing; grateful to because of donations;
used to drink; Used to; have lived am used to; used to live; are used to living;
operating; attacks; patient; improving; blind;care; indeed; education;
international; medical;
B be; C going; C blindness B not; A are; B drink