There might be life on other planets, but so far scientists haven’t found enough _____ to prove it.
The whole Chinese people will never forget the day, May 12th, 2008, _______ the strong earthquake happened in Wenchuan.
I guess Tom won’t keep on asking me the time from now on, as he has had his watch ______.
He felt that he didn’t deserve _______ such a great honor.
You were _______ to take your shoes off when you entered the school lab, but you didn’t.
--- Would you please give me a hand and take the bookcase upstairs? --- _______.