A.Yes, they are. | B.Yes, it is. | C.No, they are. |
A.in | B.at | C.to |
A.Yes, I do. | B.Yes, I will. | C.Yes, I am. |
A.What time | B.What colour | C.How |
A.do; do | B.does; do | C.does; does |
A.is | B.will | C.do |
A.studies | B.studying | C.studied |
A.starts | B.started | C.will start |
A.at | B.past | C.to |
A.at | B.on | C.in |