You look sad, Bill. —Sorry, dad. I didn’t get good grades this time.

n’t need to describe her, I ___ her serveral times.

y the advances in technology, manyfarmers have set up wind farms on their lands.

The editor-in-chief asked me towrite another article for them， abouthow to prevent bird flu.

I called you several times this morning, but you didn’t answer.–Sorry. I ______ tennis the whole morning.