—He is a very hard-working student.— ______. As far as I know, he often burns the midnight oil.
I think you got _______ wrong end of the stick. It’s Tom rather than David who has________good nose for news.
----Mum,we are going mountain climbing this afternoon. -----____________! Sometimes they’ll roll down the hillside.
Watching TV is ________a kind of relaxation , and it also _______ our knowledge.
Children must be _________ to serve(服务) their country when they grow up.
I shall never forget those days _______ I lived in the army with the soldiers, _______ has a great effect on my life.