Days later, my brother called to say he was all right, but ________ say where he was. 

 Don’t be angry with us. We _____ with you together, but we were busy with our final reports when you called in.

Alex changed his mind at the last minute，otherwise we ________ an agreement.

— Must I finish my homework now?— No, you ________. You can go home now.

 –Dad, _____ we wait until the light becomes green?--Yes, we ______ . That’s the traffic rule.