— Alvin，are you coming with us?—I’d love to，but something unexpected ________.

r Wen Jiabao paid a visit to the drought-hit southwesternChina, inspires the people

While ________ to foreigners，you must try your best to make yourself ________.

I have got an“A”in my English test. —______

You must ______ the bowls and dishes properly before they are put away. [ ]