Oh, I ....... remember to get some potatoes on the way home tonight.
MUST/ HAVE TO/ NEED TO
We ............... light lots of candles during the power cut (mất điện) two nights ago.
had to/ need to
Carl, you ....... run into the street like that without looking first. It's dangerous!
MUSTN'T
People with solar-powered cars ....... worry about the price of petrol.
DON'T NEED TO/ DON'T HAVE TO
I ......... have bothered cooking all that food; they‟d eaten before they arrived.
NEEDN'T
We ....... do any washing-up after the picnic because we'd used disposable plates and cutlery.
DIDN'T HAVE TO/ DIDN'T NEED TO
