--- Mom, can I have _____ to eat? I’m hungry.--- Sorry, there is _____ in the fridge. But I think we can go out for dinner now.
Could you tell me _______?
-----Could you tell me how long ________________? ------ About three days.
I didn’t know .
—What did he ask on the phone just now? —He wanted to know _______.
I never doubt ______ the science museums are worth_______.