次のa～fの各英文の空欄を、それぞれ下の(1)～(6)の語または語句で埋めて最適な英文にするとき、$\fbox{12}$～$\fbox{23}$に入る語または語句を示しなさい。

• a. I went to the hairdressers             $\fbox{12}$ $\fbox{13}$                                    .
  • (1) to
  • (2) short
  • (3) my
  • (4) have
  • (5) hair
  • (6) cut
• b. I did not go through all the data to find just one piece of information. I                         $\fbox{14}$             $\fbox{15}$             alone.
  • (1) to
  • (2) not
  • (3) do it
  • (4) could
  • (5) bothered
  • (6) be
• c. I would not have accompanied him to the island, $\fbox{16}$                         $\fbox{17}$                        .
  • (1) the risks
  • (2) of
  • (3) me
  • (4) informed
  • (5) he
  • (6) had
• d. They sang as they marched, which                         $\fbox{18}$                         $\fbox{19}$.
  • (1) to forget
  • (2) tired
  • (3) they were
  • (4) them
  • (5) how
  • (6) helped
• e. I do not know what delayed the train, but it             $\fbox{20}$            , which             $\fbox{21}$            .
  • (1) for my appointment
  • (2) late
  • (3) made me
  • (4) much slower
  • (5) than usual
  • (6) went
• f. It is surprising that a person             $\fbox{22}$                         $\fbox{23}$             easily.
  • (1) taken
  • (2) so
  (3) should
  • (4) of your intelligence
  • (5) in
  • (6) be