1) "You (to wake) the children?" -"Not yet, they still (to sleep)" 2) You are late, the lesson (to begin) already 3)

1) \"Have you woken the children?\" (Present Perfect) - \"Not yet, they are still sleeping.\" (Present Continuous) 2) You are late, the lesson has already begun. (Present Perfect) 3) The weather is nasty, a strong wind is blowing. (Present Continuous) 4) \"Have you chosen a topic for your composition?\" (Present Perfect) - \"Not yet.\"