Bob was________to be studying at school,but to oursurprise,he was surfing the Internet. [ ]

How did it_________that you made such a silly mistake?-I myself haven’t figured it out yet.

Mr Zhu, can I go to meet you at four tomorrow afternoon?–All right, I _____ to my office from a conference by then．I will be waiting for you there

think the English song is _________ worth _________ again.

ecial school accepts all disabled students, __ educationallevel and background