—Is that the country clinic you often refer to? —Right,just the one you know my father used to work for 10 years
Our class is made up of 54 students, _____ are girls.
It is the prevention of disease______its successful treatment that has led to the rapid increase of the world’s population.
They looked forward with hope _____ from you, but you never wrote a word to them.
I would _____ it if you come to my grandma’s birthday party and say “Hello” to her.
I can never forget the days _____ we worked together and the days _____ we spent together.A. when; which B. which; when C. what; that D when; when