A.of; at | B.on; to | C.of; to |
A.build | B.buildings | C.building |
A.When | B.Where | C.What |
A.try ![]() | B.to try ![]() | C.trying |
A.How tall | B.How many | C.How old | D.How long |
A.all of | B.all | C.of all | D.all for |
A.hundred | B.hundreds | C.thousands | D.fifty |