How often ______ your school sports meeting ______?— Once a year.

How much pork is there in the fridge? —__________We need to buy some,

Dad, _____ is my friend , Xiao Hua. –Hello, Xiao Hua.

Have you finished your work yet? –Yes, I have . It ____________ half an hour ago.

Mr Smith was standing ____the end of the boat.[ ]