Shall we _______ our discussion and have some tea or coffee?

–Can you come? –You go first and I’ll ____ in a few minutes. 

Under the new schedule, school teachers must ______each class on time, instead of adding extra lessons.

Police have asked witnesses of the accident to ___________, as the victim is critically wounded, unable to give an account of the accident.

Teenage students who are ________computer games usually would not focus on studies .