How many science classes do you have?还是How often science classes do you have?

how many of the subjects are science subhow many of the subjects are science subjects? How many science classes do you have?还是How often science classes do you have? 翻译：How many of the subjects are science subjects? how many building are there in the science labs 连词成句 How many science subjects are there in Ben's school?What are they? 英语翻译How often do you have science classes?翻译：你多久上一节科学课(自然课)?问的其中一节科学课.1.为了后面Class是复数呢?2.How often 有多久 多久一次两个意思吗?3.如果前面有单数意思了.后面cla How many _____(science)are there in your country?You should listen to your teacher ____(care)in class. How many science class do you have a week?A.We have thirty.B.we have two. How science change our life how many how many, how many how CLA是什么 CLA是什么意思 ClA是什么 英语 (27 19:6:10)How many times _____ you ____ (visit) the science museum so far 求答案和原因. How many ( ) do you learn at school?答句是：We have Chinese,math,science,English and so on.问空格里的答案.（要s开头） 用have has或者ther is there are 正确形式填空,快啊,1.what does mike（ 2.（ ）any books in the bookcase?3.my father（ ）a story-book.4.（ ）a story-book on the table5.（ ）any flowers in the vase?6.how many students（ ）in the cla