1Small children are often told that it is rude to point _______________ other people. A. on B. to C. at D. for 2. Jennifer asked me where _______________ the week before. A. had I gone B. did I go C. I had gone D. was I going 3. They _______________ him for weeks. A. haven’t seen B. didn’t see C. won’t have seen D. don’t see 4. At this time yesterday we _______________ football in the school yard. A. played B. play C. were playing D. had played ( Giải thích dùm mình nha )