— Can we see your manager now?— I’m afraid not. He ______ a meeting for nearly two hours and I’ve no idea when it will be over.

I really ought to go on a diet。I ________ on so much weight since I gave up jogging. 

Young students are______ not to smoke both in and out of school.

—What a pity!—Yes, I ____ his not trying it, but in vain．

She was surprised to find the fridge empty; the child _________ everything!