--Who did you ___ in the street last Sunday?---Lin Tao, a good friend of mine.
| A．run away | B．run for | C．run into | D．run after |
We travelled together as far as Chicago, ______ we parted.
| A．when | B．which | C．why | D．where |
Great changes ______ in the city, and a lot of factories ______.
| A．have been taken place; have been set up | B．have taken place; have been set up |
| C．have taken place; have set up | D．were taken place; were set up |
According to the record reports, one of the rare animals, ______ crocodile, is in ______ danger of dying out.
| A．a; the | B．/ ;as | C．/ ; the | D．the ; / |
______, ______ many boys, Jack like playing football.
| A．In a fact; in common with | B．In fact; as |
| C．In the fact; like | D．Actually; in common with |
This is the ____ piano on which the composer created some of his greatest works.
| A．true | B．original | C．real | D．practical |