The classroom is____clean___ it was yesterday.—Sorry, I forgot to clean it. [ ]

I got good grade in the PE test ______ May 11th. [ ]

I’d like to help homeless people, so I could ________ food at the food bank.

I_______ my homework when the door bell__________.

I don’t know what ________ of students in that school is, but you can see there are _________ of bikes and e-bikes outside the gate.