___the fact that his firstexperiments had failed, Prof Smith persisted in his research

May I book two tickets for the football match on August 8 ?—Sorry, sir. But we have no tickets

unds very much inthe job, but I’m not sure whether he can manage it．

Not only _________to the zoo, but also he ________ a good time.

In China, Chinese chess and table tennis are very popular among teenagers, many of _____ have been playing them since they were very young.