【判断题】
答题说明：句子没有语法错误请选择“正确”，有语法错误请选择“错误”It has been find that not just flowers, but all living things have cycles of activity.
①
正确
②
错误
【单选题】
They are working hard to____ what they have lost.
①
make out for
②
keep up with
③
catch up with
④
make up for
【单选题】
20. Its impossible for all the people to get jobs because ______ of them are not fit for them.
①
none
②
all
③
notall
④
everyone
【单选题】
Many______largeandbigbusiness______beenbuiltupfromsmallones.
①
a,has
②
/,has
③
a,have
④
a,has
【单选题】
The travellers have suffered many hardships and ____________ many difficulties.
①
undergo
②
undergoes
③
undergone
④
underwent
【单选题】
The city ____ its birth-rate by almost 60% in the past 20 years.
①
cuts
②
has been cut
③
cut
④
has cut
【单选题】
The city ______ its birth-rate by almost 60% in the past 20 years.
①
cuts
②
has been cut
③
cut
④
has cut