What a pity! If I had known Tom earlier, I ________ him to the party.
I tried to persuade him not to keep in touch with her, but what I said was always ______.
The Great Wall is ______ tourist attraction that millions of people pour in every year.
This is the reason ______he didn't come to the meeting.
---Alice, why aren’t you at work today? ---I ________a day off.
Many of them turned a deaf ear to his advice, _______ they knew it to be valuable.