When and where to build the new factory ___ ________ yet.
| A．is not decided | B．are not decided |
| C．has not decided | D．have not decided |
SARS is an illness that can result in death unless left _____ in time.
| A．to treat | B．treating | C．treated | D．treat |
It knowledge is power, ____Sir Francis Bacon wrote in 1579, ______ perhaps creativity ca be described as the ability to use that power.
| A．what; and | B．as; then | C．which; and | D．that; then |
—Have you nearly finished?
—______, we have just begun.
| A．Above all | B．After all |
| C．On the contrary | D．On the other hand |
Children’s brains can’t develop properly_______ they lack protein.
| 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 |