e watch, which I_________only lastweek, is out of order again.

In the terrible tsunami (海啸), many buildings fell down, hundreds of people were killed, and thousands of people were badly _____. [ ]

all the required papers, he didn’tanswer the questions fluently in class．

Who will be our Biology teacher this term— Mr. Green will teach __________ Biology and his lessons are worth ________.

Li Xing’s illness(病) isvery_____. You must take his illness ______.