Why is Mr . Yang still in the teachers’office —- Maybe he _______ his work yet .

Do you have any more bags of this size — I’ sorry we’ve sold ________ but this one.

They have________signs in some places to remind the visitors not to step on the grass.

He has a good knowledge of English, but little ______ he know about Cerman. [ ]

Home is ________ somebody notices when you are no longer there.