________ 18 June 1940, Churchill gave another fine speech when he drew attention ________ the courage of everyone defending Britain

My mother often spends 2 hours ______ housework every day.

It __ be the vocyou the problem in the exercise because you know a lot of words.

Both the young and the old are getting crazy _______ WeChat(微信).— I agree. Nowadays we can see many people spend their free time ______ it.

It is this kind of exciting trip _____most of my classmates only dream about.