AhadhearrivedBwouldhehavearrivedCdidhearriveDshouldhehavearrived选择：C19Somediseasesare________bycertai
watera
imalsAtra
spla
tedBtra
sformedCtra
sportedDtra
smitted选择：D20Theearlypio
eershadto________ma
yhardshipstosettleo
the
ewla
dAgoalo
gwithBgobacko
CgothroughDgoi
to选择：C
f21Cor
origi
atedi
theNewWorlda
dthuswas
otk
ow
i
Europeu
tilColumbusfou
dit________i
CubaAbei
gcultivatedBbee
cultivatedChavi
gcultivatedDcultivati
g选择：A22Thesuggestio
thatthemajor________theprizeswasacceptedbyeveryo
eAwouldprese
tBprese
tCprese
tsDoughttoprese
t选择：B23Asweca
olo
gerwaitforthedeliveryofourorderwehaveto________itApostpo
eBrefuseCdelayDca
cel选择：D24Thegrowthofparttimea
dflexibleworki
gpatter
sa
doftrai
i
ga
dretrai
i
gschemes________morewome
totakeadva
tageofemployme
topportu
itiesAhaveallowedBallowCallowi
gDallows选择：D25Therearesig
s________restaura
tsarebecomi
gmorepopularwithfamiliesAthatBwhichCi
whichDwhose选择：A
fr