The two giant pandas are so much alike that it is impossible to ________ one from the other.
—How did you find your visit to Qingdao, Joanna?—_____________.
One side of the board should be painted yellow, and _______ white.
When I went home after work, I found my house ______ but strangely, nothing had been stolen.
The manager told us that _______ careful we are, ________ mistakes we’ll make.
Personally I think the ______ Andrew drew from his simple experiment is not scientific.