Instructions: Use the present perfect or present perfect pro…

Instructions: Use the present perfect or present perfect progressive form of the words in parentheses to complete the sentences. My dog [a1] (bark) for an hour now. What can I do to calm him down? Hi Marco! How [a2] (you / be)? I [a3] (not / have) anything to eat since breakfast. Dad [a4] (finish) working on dinner. Let’s go eat!

CAREFUL: This problem is similar to the previous one, but th…

CAREFUL: This problem is similar to the previous one, but the given function may be different in some way. Even if your function is the same, the question is different.   A hot metal bar is cooling down to room temperature. The temperature (measured in degrees Fahrenheit), after minutes of cooling is given by [a] [b]