It was about 600 years ago __________ the first clock was made.
Blind people can read ____ touching letters in raised dots called Braille.
–Will you read me a story, Mummy? --OK. You ______have one if you go to bed as soon as possible.
_____difficulty we will face, we should have confidence and try to solve it.
It was too dark, and I couldn’t _______ the words written on the wall.
Maybe you have been too many famous restaurants, but nowhere else _______ such spicy ducks.