用所给动词的适当形式填空。

1. David often ___________ (help) me with my English.

2. Can you ___________ (put) an egg on your head?

3. Look, the farmers ___________ (pick) apples on the trees.

4. Nancy ___________ (play) the piano at the concert tomorrow.

5. The children went to the farm yesterday. They ___________ (have) fun there.

英国哲学家毕尔生说：“万物都在运动，但只是在概念中运动。”这一观点是（）

A.离开运动谈物质的形而上学观点

B.离开物质谈运动的唯心主义观点

C.离开物质谈意识的精神万能论观点

D.离开意识谈物质的不可知论观点