1£®I found the pre­holidays a good time to encourage young children to __donate__ (¾èÔù)less­used things, and it worked.

2£®Nowadays many people are willing to do __voluntary__ (×ÔÔ¸µÄ)work for their communities.

3£®They are holding a party in celebration of their fiftieth wedding a __nniversary__.

4£®Tickets may be p __urchased__ in advance from the box office.

5£®They studied the geographical __distribution__ (·Ö²¼)of the disease.

6£®They are now under a great deal of pressure to tighten their airport __security__ (°²È«)£®

7£®The state also cleared the way for companies to sell or rent out self­driving cars, and for companies to __operate__ (¾­Óª)driverless taxi services.

8£®His not­for­profit organization runs 100 river boats that serve as floating libraries, schools, and health __clinics__ (ÕïËù), and are equipped with solar panels and other communicating facilities.

9£®I made this skirt just by __sewing__ (·ì)two pieces of cloth together.

10£®My grandmother gave me a packet of wild flower __seeds__ (ÖÖ×Ó)£®