Many students in our school _______ the old and they usually offer their seats to them on buses.

Let’s clean the classroom. It’s very ______.

We looked at each other ___ surprise when we heard abird singing ” Happy birthday to you” .[ ]

Joy, what happened to the plane? It ___ at midnight, but it didn’t land on the airport on time.

I play soccer ______ 5 o’clock ______ the afternoon.[ ]