______ come into leaf or bloom is obviously a sign of spring.
Most morning reading classes should be made use_______ English better.
-Are you familiar with the music?-Yes. There was a time _____ this kind of music was quite popular.
The teacher asked a very difficult question. It was Ted who finally _____ a good answer.
I just wonder _______ that makes him so excited.
-I like Tom very much_________he sometimes gives me some trouble.-Oh, it's unbelievabae.