Shall we go to the concert together at seven o’clock this evening— . Will half past seven be OK

Talk to your teacher and you will get help ________ you have a problem.

﹣﹣Why not go into the classroom﹣﹣The door locked．

Great changes ______in our city. It is no longer ____ it used to be ten years ago.

y what weighs us down are not the burdens oflife, but how we handle _______