21、A_______boywastheonlysurvivorintheplanecrash.
a.two-yearsold
b.twoyearsold
c.two-year-old
d.two-years-old
22、ThetopoftheGreatWallis________forfivehorsestogosidebyside.
a.enoughwide
b.sowide
c.wide
d.wideenough
23、Atthattime,she______onajourneywithherfriend.
a.isbeing
b.hasbeen
c.was
d.is
24、Selectingamobilephoneforpersonaluseisnoeasytaskbecausetechnology_______sorapidly.
a.hasbeenchanged
b.willhavechanged
c.willchange
d.ischanging
25、Itwasagreatpleasure________metobeinvitedtotheparty.
a.of
b.on
c.to
d.for
26、I'llhaveacupofcoffeeand_____.
a.twobreads
b.twopiecesofbreads
c.twopieceofbreads
d.twopiecesofbread
27、Wecamefinally_________theconclusionthatshehasbeentellingliesallthetime.
a.into
b.of
c.to
d.at
28、Thepeopleinthiscityhaveplanted________treesalongbothsidesofthestreets.
a.alotof
b.agreatdealof
c.much
d.alargeamountof
29、WhileIwasintheuniversity,Ilearnedtakingaphoto,____isveryusefulnowforme.
a.it
b.which
c.that
d.what
30、Don'tforget________thewindowbeforeleavingtheroom.
a.havingclosed
b.tohaveclosed
c.toclose
d.closing
