Such a good opportunity may not come again, so you ____________ let it go this time.

____ red is a symbol of warmth, it can sometimes make people feel uneasy or even frightened.[ ]

It was also in 1964 ______ Martin Luther King Jr received the Nobel Peace Prize for his great contribution to the world peace.

ve me half, and _____ theother half for her husband

Have you seen Lin Feng these days—I saw him yesterday evening. He _______ basketball with other boys.