This problem is so tough that they can’t find the ____.
— Would you like to climb the hill with us tomorrow? — If it ___________ ,I ___________.
–Do you know ______? –To meet her friends from America.
— Could you tell me ___________? —No problem.
—Excuse me. I wonder ____________. —Turn left. There’s a supermarket next to the park.
—What did the teacher say just now? --He asked the students_____.