ade out, the law must be carriedout ______ any difficulty

The theory was attacked when it was first , but gradually it was accepted.

Can I help myself to something to eat?— Of course, you are ______ to, you are our guest.

No person _______ carry a mobile phone into the examination room during the national college Entrance Examinations.

We plan to ________ a short play on Teachers’ Day. 。