At our factory there are a few machines similar to ________ described in this magazine.
| A．them | B．these | C．those | D．Ones |
Mr.Smith was_________ to be a doctor but he became a teacher when he grew up.
| A．demanded | B．supposed |
| C．suggested | D．agreed\ |
I’m sorry I can’t go to the film with you because I have a lot of things to _________.
| A．take to | B．get to |
| C．see to | D．keep to |
Children’s brains can’t develop properly_______ they lack protein(蛋白质).
| A．when | B．since | C．because | D．unless |
This is the very toy car ________ which he came here the other day.
| A．by | B．in | C．for | D．on |
I began to fish before memory began, _______ I know I have always fished.
| A．so far | B．so as far as | C．as far as | D．so |