—What about the student in your class, Mr. Wang? —The doctor said that sleep caused him poor memory and poor concentration.
It was very kind of the boy to tell us ________ the location of the newly-built railway station, so it only took us about ten minutes to find it.
The old man sat down and looked at me with a(n) _______ look on his face, which made me suddenly realize that I was still a helpful person.
There has been a _______ increase in the temperature on the earth for about 100 years, but few people notice it.
Though Mr. White is very busy with his business all day, he still _________ his three children and tries his best to get along well with them.
Whether at school or at home, children should be encouraged to read books and ______ what may be useful to their study.