The astronaut did many experiments in the spaceship, great help for knowing more about space.
A.which we think it is | B.which we think is of |
C.of which we think is | D.we think which is of |
推荐套卷
The astronaut did many experiments in the spaceship, great help for knowing more about space.
A.which we think it is | B.which we think is of |
C.of which we think is | D.we think which is of |