21.Some cars are equipped with GPS for people easily to find the _________ of their destination.
—Did you ask your elder brother for help? —I need to. I managed it by myself.
We will be given a(n)to ask questions at the end of the lecture.
We all sighed with relief when plane finally landed safely.
It was ____ loud music that we couldn’t hear ourselves speak.
---I’m very sorry to have ___ you with so many questions. ---It doesn’t matter.