— Did the police ask the guard what happened?— Yes, the guard told the police all _________ he knew.A. which B. that C. what
Sally sings pretty _______ and she is also _______ at dancing.
Jenny, you often get ill, so you should _______ your health.
Bill can swim, _______ he can’t sing.
Daming likes _____ in the morning everyday.
Tom is in _____.