Сгруппируйте парами слова,близкие по значению a disease, to start, not to be able to do smth, to hospitalize, a medicine, a polyclinic, a hospital, to produce, a response, a trouble, a reaction, to begin, to cause, in-patientdepartment, to admit to the hospital, a drug, anout-patientdepartment, to fail to do smth

A disease, a trouble,
 to start,  to begin, 
 not to be able to do smth,  to fail to do smth
 to hospitalize, to admit to the hospital,
 a medicine,  a drug, 
 a polyclinic,  a hospital,
 to produce, to cause,
a response, a reaction,
 in-patient department, an out-patient department,