Theukuleleisa________instrument,whichresemblesaguitar.

Nowadays little knowledge __ to be a dangerous thing.

Moviegoers know that many special effects are created by computers, they often don' tknow is that these scenes still require a lot of work.

Don’t ask him how old he is. He’s really ____about it.

__________inthoughtwhiledriving,healmostranintothecarcomingintheoppositedirection.