﹣﹣Do you mind telling me how to start this machine?
﹣﹣ . It's very easy. Do it like this.( )
Yes, of course.
No, not at all.
No, thanks.
Yes, you are right.
My best friend helps to ______ the best in me,as the saying goes.( )
A.bring outB.bring inC.bring up
Artemisinin _______ by Tu Youyou,a great Chinese scientist.( )
A.was inventedB.invented
C.has invented
As our children get bigger,our house seems to get ________.( )
A.the smallerB.smaller
C.smallest
The watch _______ you gave me keeps perfect time.( )
A.whoB.whatC.that
She went to a European university to study art._______ university is really amazing.( )
A.AnB.TheC.A