They stood there and opened their eyes wide, _______ what was happening.[ ]

Jack is late again. It is _____ of him to keep others waiting.

Have we ________ food?. — Yes, ______. We’d better buy some.

As high school students, it’s very important to keep ourselves ______ of what’s happening home and abroad every day

Some more milk, please. —-Sorry, there’s ________ left in the fridge.