1.—When did you last see your first teacher?
—On ______Thursday last July, at ______celebration of her 30th year of teaching.
A. a; the B. a; a C. \; the D. \; a
2. _____sustainable development, measures are being drafted to control rising prices.
A. For the sake of B. In favor of C. In case of D. In memory of
3. The policeman arrested the suspect in a nearby city after _____was about ten days.
A. that B. it C. what D. which
