Not until the teacher explained the importance of getting up early ______ we promise to come early.

Miss Liu is Englishteacher. She teaches English verywell.

ack box is a necessary device on anairplane, which records its speed, direction and whether everything on theairplane______ normally

Your brother’s never careless, _______ he—_______ , he often makes mistakes.

The disabled _____ able to do the same things as common people.