Sometimes the best and most beautiful things in this world ________.but can be felt with the heart.
The field research will take Joan and Paul about five months; it will be a long time ________ we meet them again.
I just wonder ________ that makes him so excited.
By nine o’clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, ________ appeared a rare rainbow soon.
— It’s burning hot today, isn’t it? — Yes. ________ yesterday.
“Freeze, you guy! ________, and I’ll shoot you.” an old man with a gun in hand shouted at me.