连词成句。

1. is, inside, school, the, Li Ming

                                                                . 

2. does, live, where, a, bird  

                                                                ?

3. favourite, is, my, green, colour 

                                                                .

4. clerk, in, store, a, works, a  

                                                                .

5. I, you, help, may  

                                                                ?

6. like, this, you, do, dress

                                                                ?

我们平时说市电电压为220V，该值是指：（）。

A、最大值

B、有效值

C、平均值

D、瞬时值