We work together to achieve our common purpose: ________ world that is safer, cleaner and healthier than ________ one we are living in.
Their clothes were ______ colorful ________ I could not stop taking photos.
We know that 80 of the cases of blindness can .
—Is your father in ?—No, he _______ for three days.
—Which would you like , tea or coffee? —_______ is OK, I don’t mind.
I have kept the book _______ the morning of May 1.