1. Use Present Perfect or Present Perfect Progressive: 1. The girls (dance) since 3 p.m. 2. They (travel) for a month already. 3. Sue (know) Sally all her life. 4. Alice always (want) to visit Finland. 5. I (read) this book for two hours already.

1. The girls have been dancing since 3 p.m. 2. They have been traveling for a month already. 3. Sue has known Sally all her life. 4. Alice has always wanted to visit Finland. 5. I have been reading this book for two hours already. *Объяснение:* *Present Perfect Progressive используется для действия, которое началось в прошлом и продолжается до сих пор. Present Perfect используется для действия, которое завершилось к настоящему моменту или имеет результат в настоящем.*