取10g NaOH固体，配成500mL溶液，所得溶液c（NaOH）═______mol•L^-1；取该溶液50mL，向其中加入1.07g NH₄Cl固体，充分反应后，加热溶液，最多可得到标准状况下氨气的体积为______L．

根据句意，用括号中所给单词的正确形式填空。

1. — How many _______(player) are there on a football team? 

    — Eleven.

2. Sandy __________ (not like) listening to music.

3. Mr Wu is our teacher. He teaches ________( we ) English.

4. I'm new here, but all my classmates are __________ ( friend ) and helpful to me.

5. How much water _____ ( be ) there in the bottle?

6. Our school football team wins again. Frank plays very _______( good ) in the match.

7. — Who is the _______(one ) to come to school?

    — Oh, it's Lily.

8. Is __________( child ) Day in June or July?

9. He likes swimming. He is a good ________( swim )

10. — What do you do for Halloween?

     — We play a game _______( call )" trick or treat".