．We should give a hand to the people ________ need help．
| A．who | B．whose | C．whom | D．when |
Don’t ______ a person only because he has failed in an examination.
| A．look up | B．look down |
| C．look down on | D．look up to |
Though we spent a lot, we think it _____ because we succeeded in the end.
| A．worth | B．worth being spent |
| C．worthy of | D．worthwhile |
She won a Nobel Prize for her scientific ______.
| A．interests | B．achievements |
| C．behavior | D．observation |
The flowers ______ my mother, but my sister thought they were for her and took them.
| A．were intended for | B．intended for |
| C．intended to give | D．intended giving |
At home, he keeps some pets，to which he ______ all his spare time.
| A．spends | B．offers | C．devotes | D．provides |