–The classroom is_____ clean_____ it was yesterday.--Sorry, I forgot to clean it.
This kind of iPad ______ in our computer shop. It ______ very well.
When you feel _____ to watch TV by then, you are all right.
It’s necessary _______ a foreign language.
---Let’s go fishing if it _______ this weekend. --- But nobody knows if it _________.
----It’s kind _______ him to help me solve the problem. ---- Yes, he is always kind ______ everybody.