What book / read / now?, What book are you reading now?, How long / study English? Why / study it?, How long have you been studying English? Why are you studying it?, What / watch / before / go to bed last night?, What had you been watching before you went to bed last night?, What / do / next holiday?, What will you be doing during/on your next holiday?, How long / know / your best friend?, How long have you known your best friend?, How long / live in this city / by next year?, How long will you have been living in this city by next year?, What /should / do / last weekend / but decided not to?, What should you have been doing last weekend but decided not to?, What / do / all day today?, What have you been doing all day today?, What music / listen to / before come to class?, What music had you been listening to before you came to class?, What / do / this time tomorrow?, What will you be doing this time tomorrow?.

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