________ is know to us all is that the old worker, for _______ life was hard in the past, still works hard in his seventies.
| A．As; whom | B．What; whose | C．It; whose | D．What; whom |
John plays basketball well, ___his favorite sport is badminton.
| A．so | B．or | C．yet | D．for |
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 |