—Every year________tourists come to the island.
—________of them is about one million.
A.a number of;A number of
B.the number of;A number of
C.a number of;The number of
C.the number of;The number of
—Every year________tourists come to the island.
—________of them is about one million.
A.a number of;A number of
B.the number of;A number of
C.a number of;The number of
C.the number of;The number of