Please don't make so much noise.I_____hear the speaker very well.( )
needn't
mustn't
can't
shouldn't
The scientist has failed in the test many times,______he never gives up.( )
but
so
or
﹣Joan has made great progress in speaking Chinese.
﹣She_________works hard at it,you know.( )
never
seldom
always
﹣Our English teacher will work for 2017 BRICS Summit (金砖峰会)this September.
﹣Great!I am so proud of_____.( )
she
her
hers
China successfully hosted the Belt and Road Forum_________May,2017.( )
on
in
by
Jack is such__________friendly boy.He gets along well with his classmates.( )
a
an
the