Present Perfect - Present Perfect Continuous

Choose the correct answer: The children are really tired. They _______________ for the whole morning.

Choose the correct answer: Sorry, we're late. How long _______________ for us?

Choose the correct answer: I'm sorry, Mary isn't here. She _______________.

Choose the correct answer: I _______________ Kate for a long time. She's my best friend.

Choose the correct answer: How many countries _______________?

Choose the correct answer: It's still raining now. It _______________ for two hours.

Choose the correct answer: Could you help me with my homework? I _______________ Maths.

Choose the correct answer: There you are! I _______________ for you for twenty minutes.

Choose the correct answer: I _______________ this book for two hours and still can't finish it.

Choose the correct answer: ____________________ abroad?