—What do you think of Andrew ? —There are some things that are not easy to , and his coldness is one .
To our surprise, the man looking very rude____ his son very carefully.
The theory he ____ about black hole isn’t understood by most of people.A .put up B put down C put off D put forward
It will be many years ______ the doctors and medical scientists can find _____ for cancer.
The photo reminded me____ I had seen in London.A what B .that C. of that D. of what
So amused ________ that I couldn’t help laughing when I saw the performance given by the children.