29．The police tried to get some clues from the suspect, but he remained________

When a customer withdraws money from the bank, it is required to leave his signature. But how can we be sure it is_______?

She felt rather _______that she should drive the car at such a________ speed．

— You looked so ______, what’s the matter?— I’ve had a very trying time this afternoon. I had to spend the whole listening to the _____ lecture by Mr. Smith.

After the president made an official announcement, she expressed her ________ opinion.