The police tried ________________ to break up the protest crowds.
As nobody here knows what is wrong with the machine, we must send for an engineer to ______ the problem.
Mr. Brown thought it would be a good idea to have ______ from his workers to improve his plan.
The politician’s speech _______ the others that he was the man for the job.
Julia, if you hurry up, I think it quite _______ that you will catch the next train.
Only ______ the painting _______ decide whether it is worth buying.