The robot needs _______ once a month. And we will check it for you for free.
--- ______ beef do you want? --- Three.
We ______ a pizza ______ the money.
--- ______ not to be late tomorrow. --- Ok, I ______.
Don’t ______, my son. Mum’s here with you.
Our plan ______ the trip ______ Suzhou needs to change now.