Question

The police are________to conclude that the cause of fire had been a cigarette end.

A．probable

B．possible

C．maybe

D．likely

Answer 1

D

本题考查表“可能”的相关词语的固定搭配。
It is probable that…
      It is possible   that…
to do…
     It is likely     that…
to do…
Sb. is likely to do …
由此可见，本题的主语the police 为人，因此应选D。