4. I ________ (read) the novel twice. It’s interesting. 5. She _________(go) to Pairs, hasn’t she? Yes. How ______ she _______(go) there? She _______(go) there by air. 6. So far, many countries _______________(develop) their software programs. 7.Mr Chen ______(give)up smoking last year. 8.Mr Chen __________(give) up smoking since last year.

have read

has gone

did

go

went

have developed

gave

has given

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