1.Chen and Jens/aren’t/come/this meeting/so/let’s start. 2.A human brain/need/energy. 3.A computer/use/chemicals. 4..A human brain/a computer/store information. 5.A computer/usually/easy/fix. 6..We/not know/ everything/ about/thehuman brain. 7..You/ever/handwrite/aletter? 8.My son/has/send/me/a postcard.

1, Chen and Jens aren’t coming to this meeting so let’s start.

2, A human brain needs energy.

3, A computer uses chemicals.

4, A human brain is like a computer that stores information.

5, A computer is usually not easy to be fixed.

6, We do not know everything about the human brain.

7, Have you ever handwritten a letter?

8, My son has sent me a postcard.

Chen and Jens aren’t coming this meeting so let’s start

.A human brain needs energy.

A computer uses chemicals.

A human brain is a computer store information.

A computer usuallybeasy to fix.

We are not know everythingnabout the human brain.

Have You ever handwrite a letter?

My son has sent me a postcard.