A subway is an effective way to solve traffic problems in_________big city. It has evident advantages, such as_______speed and convenience.
A.the; the | B.a; the | C.a; / | D.the; a |
推荐套卷
A subway is an effective way to solve traffic problems in_________big city. It has evident advantages, such as_______speed and convenience.
A.the; the | B.a; the | C.a; / | D.the; a |