4.A.a friend B.an enemy C.a neighbor D.a patient
3.A.possible B.impossible C.usual D.unusual
2.A.pleased B.surprised C.touched D.moved
1.A.checked B.tested C.judged D.examined
19.A.other B.the other C.all other D.others
18.A.agree B.believe C.realize D.allow
17.A.repeat B.remain C.last D.happen
16.A.working B.moving C.living D.waking
15.A.With B.As well as C.Except D.Rather than