Choose the most suitable one

1-it is    ___possible to sing and drink at the same time.
a) ir         b) il           c) im          d) un

2-It seems ___logical to ask me when you already know
the answer.

a) ir          b) il            c) dis        d) im

3-You have    ____understood what Mary said.
a) de       b) un          c) dis         d) miss

4-The storm caused ___reparable damage to the house.
a) re          b) ir           c) im        d) il

5-The date of the meeting still ____decided.
a) im          b) un       c) miss     d) dis

6-There have been 4 train ___railments last week..
a) un        b) re         c) de          d) miss

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