This is a paraphrasing task. In this task, you're given a sentence and your task is to generate another sentence which express same meaning as the input using different words.
--------
Question: the main issues are high cost , low energy density and heavy weight of batteries .

Answer: the main problems are high costs , low energy concentrations and a high battery charge , which greatly limits the commuter distance .

Question: 'you 've once again managed to drive your son out of the house '

Answer: '' you managed to get your son out of the house again today . ''

Question: and you 've lifted the morale of our own troops .

Answer:
and you have managed to raise the morale of our own people .