| A．plane | B．train |
| A．traffic lights | B．traffic rule |
| A．policeman | B．engineer |
| A．ride a bike | B．play the violin |
| A．post office | B．bookstore |
| A．playing | B．played | C．play |
| A．in | B．at | C．for |
| A．too many ; too many | B．too many; too much | C．too much; too much |
| A．Which， It | B．What， This | C．What， It | D．Where， It |
| A．my | B．me | C．his | D．him |
| A．in | B．about | C．at | D．for |
| A．on | B．in | C． at |
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