It is and quickdelivery service ______ account for the fact that the number of Internetshopping on this website is four times ______ it was last year.

Would you like a small hamburger——______________.

Taobo is Asia’s largest retail（零售的） network platform, ______ people can buy and sell many kinds of things．

Though the situation is rather serious, financialleaders are still ______ about global economy.

I phoned you at six yesterday afternoon, but nobody answered.—-I _______ a walk with my parents near the river.