She will tell us why she feels so strongly that each of us has a role _____ in making the earth a better place to live.
| A．to have played | B．played | C．playing | D．to play |
Someperson ____callingforyouatthegate.
| A．are | B．is | C．isbeing | D．willbe |
Oneachsideofthestreet ____alotoftrees.
| A．stands | B．grow | C．isstanding | D．aregrown |
Thesheetsforyourbed____washing.
| A．needs | B．areneeding | C．want | D．arewanting |
OneofMarx’sworks _____writteninEnglishinthe1860s.
| A．was | B．were | C．wouldbe | D．are |
Thenumberofthepeoplewho _____cars _____increasing.
| A．owns,are | B．owns,is | C．own,is | D．own,are |