一You have made great progress in your studies of English，haven’t you?一Yes，but much _______ ．‘

The problem is _____ difficult for me _____ solve

下列各句中，没有语病的一句是

We ______ that you would fix the TV set this week— I’m sorryI ______ to fix it this week, but I’ve been too busy

It’s everyone’s duty to join the Clean Your Plate Campaign.—Sure. We should try to _______all the food that we’ve ordered.