I saw Jack yesterday. He told me that he would stay here _____ the end of this year.
| A．at | B．by | C．for | D．till |
It’s not doing the things we like, but liking the things we have to domakes life happy．
| A．that | B．which | C．what | D．who |
Until now, we have raised 50,000 pounds for the poor children, _______ is quite unexpected．
| A．that | B．which | C．who | D．it |
My parents always _______ great importance to my getting a good education．
| A．have | B．attach | C．accept | D．pay |
You can use a large plastic bottle, _____ cut off, as a pot to grow young plants in．
| A．the top is | B．the top of which |
| C．whose top | D．with its top |
Although at present human egg cells and embryos needed for cloning research are difficult _____, Newspapers _________ evil leaders hoping to clone themselves．
| A．to obtain; wrote | B．to obtaining; wrote to |
| C．to obtain; wrote of | D．to be obtained; wrote |