33. We all chipped in to buy the coffee machine in the office. Chipped in means ___.
(A) put in money (B) put in a chip (C) used a cell phone chip (D) damaged
38. The city government urges every citizen not to waste any water because it ____ for four
months.
(A) hasn’t rained (B) isn’t raining (C) hadn’t rained (D) wasn’t rainy