My uncle gave me a model plane yesterday. It’s a structure of__________.
| A．S+V+P | B．S+V+IO+DO | C．S+V+DO+OC | D．S+V+DO |
相关试题
The sign on the left tells us that _______ .
A. this is a place for us to swim
B. it’s safe to swim in this place
C. swimming is not allowed here
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