ld be your duty to bear it, if you could notavoid it: it is weak and silly to say you cannot bear _______ it is your fateto be required to bear.

H7N9 is a new kind of .

He __________ everywhere for materials and finally his efforts paid off. The medicine __________ to be very effective.

Is the price of the backpack very______— No, it ______me only twenty yuan.

― Daddy，how do you like it if I buy a wallet for my mummy’s birthday ― ______