The real secret to successful learning lies instudents＿＿＿＿an interest in what they are doing.

The play had already been on for quite some time when we __________ at the New Theatre

I often talk with my friends ____ the phone.

下列各句中，没有语病的一句是

Tomorrow is Tom’s birthday. Have you got any idea _____ the party is to be held? [ ]