①There is a ping-pong game on April ____ (twenty-nine)．

②____ Tom ____ (like) the tennis game?　

③Jim ____ (have) an art class every day.

④Do you know his brother is only 5 ____ (year) old?

⑤ My mother wants ____ (have) a party for me.

⑥Those boys and girls are all ____ (China).

⑦ -How many ____ (sweater) do you have?  -Three.

⑧Today is my ____ (twenty) birthday.

⑨They want to have two baseball ____ (game).

⑩When ____ (be) the School Day?

若2x+1=3，则6x+3的值为____ 

有学者指出，明清时期的一些江南市镇，出现了土地所有权分散化的趋势，地主所有土地占全部耕地的30%左右，富农、中农、贫农所有土地占全部耕地的70%左右。这种现象反映了当时江南一些地方（    ）

①G→Q+NaCl   ②Q+H₂O→X+H₂    ③Y+NaOH→G+Q+H₂O      ④Z+NaOH→Q+X+H₂O

则G，Q，X，Y，Z这五种化合物中氯元素的化合价由低到高的顺序为（   ）