Use Present Perfect Continuous: 1. We (to build) this house since 1994 Use Present Perfect Continuous: 1.We (to build) this house since 1994. 2.Where are you? I (to wait for) you for an hour already. 3. He (to work) hard since 4 o’clock. 4.Kate (to wash) the floor for twenty minutes already. 5.How long you (learn)the French language? 6.The children (to play) football since 3 o’clock. 7.I (not to eat) at night for two years. 8.What you (to read) since morning? 9. She (to jump) for ten minutes without any rest. 10. We (to wait) for you since ten o’clock. 11. Nick (to write) a letter since he came home. 12. Children (not to eat) since five.