Respuesta y Explicación:A) Completa con "SINCE" o "FOR"SINCE se usa para un punto específico en el tiempo (el inicio de la acción).FOR se usa para un período de tiempo (la duración de la acción).two o’clock: SINCEtwo weeks: FORa year: FORlast Friday: SINCEshe was five: SINCEthree o’clock: SINCEa few weeks: FOR1923: SINCEa week: FORlast year: SINCEa long time: FORyesterday: SINCEFebruary: SINCEtwo o'clock: SINCEB) Elige la respuesta correctaI have worked in that company since last weekend.We have played tennis for three hours.Kerem has watched TV since the morning.Mertem and Adil have slept since last night.My mother has been in the kitchen for three hours.They have studied for the exam for a week.Murat has been out since ten o'clock.C) Haz oraciones usando "SINCE" y "FOR"I have played soccer for a week.She has played for five hours.He has taught English since 2009.They have had an exam for three hours.I have read a book since two o'clock.We have cleaned the house for three hours.They have been teachers for ten years.D) Haz oraciones usando "SINCE" y "FOR"I have waited for the bus for three hours.My mother has cleaned the house since the morning.Sinem has swum in the swimming pool for five hours.Mehmet and Suna have been in Spain since 2007.