The worker earned little money a month, so he had to ________ only instant noodles.
I don’t really work here; I ______ until the new secretary arrives.
---Why hasn’t Jane arrived yet? ---She ______ again in the morning.
---Could you ______ take care of my dog while I’m away?---Sure. Leave it to me, please.
---Can Li Hua help me with my English?---I regret to tell you her English is ______ yours.
In fact fuels we burn and plant food we eat ______ their chemical energy in the form of heat.