Don't be in hurry.the bus _(arrive )in an hour. l think you should revise more , you _(make ) a lot of mistakes recently. the singer _(sing) the last song when l left the concert .

Don't be in hurry. The bus arrives in an hour.

l think you should revise more. You have been making a lot of mistakes recently.

The singer was singing the last song when l left the concert .