I have to buy _________of the two books because I don’t know which to choose.
Liu Xiang is well known all over the world, he ____ to appear in films.
The sign “No Smoking” can be seen ____.
There is _____ egg in the cup. ____ egg is red.
I’m not good at English, my friend isn’t, ____.
---- Oh, dear! ---- ______? ---- I’ve found I left my English book at home.