'A bolt from the blue' means-

A motorbike isn't --------- a car.

All of the following sentences are incorrect except:

Although destroyed partially, the detectives were able to identify the criminals from the remains of explosive.

Although it cannot be proven, presumable, the expansion of the universe will slow down as it approaches a critical radiu...

"As contrasted with the honeybee, the yellow jacket can sting repeatedly without dying and carries potent venom that can...

As of now we still don't know

Choose the appropriate alternative;

Choose the appropriate sentence.

Choose the appropriate sentence.