e opening________of the school, our headmaster gave a short speech

Was it during the Second World War_____ he died?　　　　　　　

How long is it ________________ we last hada picnic together

Thereis a great deal of evidence that musicactivities engage different parts of the brain

I called you at half past nine this morning, but there was no answer.——Oh, sorry. I _____ with my cousin in the supermarket.