51.A.let alone B.let out C.let in D.leave alone
50.A.put an idea into B.gave an impression on
C.keep a roof over D.have eyes in the back of
49.A.anything B.everything C.something D.nothing
48.A.angry B.pleased C.disappointed D.bored
47.A.left over B.paid off C.used up D.carried out
46.A.your brother B.yourself C.your sister D.the family
45.A.making B.stopping C.working D.getting
44.A.get rid of B.hang out with C.break away from D.keep in touch with
43.A.A-student B.B-student C.C-student D.D-student
42.A.joke B.means C.tool D.trick