Sir, do you have anything _________ this afternoon? If there is nothing to do, I wonder if I can ask for a leave.
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.
26. 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
The Beijing express had _____ on time when we hurriedly got to the platform.