1. I didn't believe them at first but in fact everything .......... was true A. they said B. that they said to C. what they said D. to which thay said 2. Do you have the book ......... the teacher ? A. that is belongs to B. to which belongs to C. to which belongs D. that belongs to 3. York, .......... last year, is a nice old city A. I visited B. that I visited C. which I visited D. whom I visited 4. Neil Amstrong, the first person .......... on the moon, reported that the surface was fine and powdery. A. that set foot B. set foot C. setting foot D. to set foot 5. Thanksgiving is a time......... everyone eats turkey in America. A. at that time B. when C. that D. b and c Giải thích đầy đủ