Chairman Xi Jinping had _______ friendly talk with US President Obama in ______ America last month.
The only question __________ I ask for you was how to used the computer .
The mooncakes with meat in it tastes__________ and sells__________ .
I find __________ very difficult to learn English well .
The math problem is too difficult ,I can’t__________ .
On National Day there are more than five __________ people in the zoo.