3.What a re they doing? I didn't know.(合并为一句)

I didn't know what            doing.

2.Will you walk to school? She asked me.(合并为一句) 

She asked me       I               to school.

1.I prefer being outside. Maria says.(合并为一句)

Maria says                being outside.

10.It isn't easy         (become) a professional player.

9.Could you please        (not smoke) here?

8.The teacher told us light        (travel) faster than sound.

7.I have too many things       (do) .

6.Go       (pass) the shop and you'll find the bank.

5.It's very        (polite) of us to talk loudly in public.

4.They like English very much and they arc good English      (speak) .