Mr. Huang is an excellent English teacher who has over 20 years' teaching _________.
experience
information
knowledge
They have collected more than 14,000 books since the library_____ last month.( )
A.builtB.was builtC.buildsD.is built
When President Xi Jinping has spare time,he enjoys_______and sports.( )
A.readB.readsC.to readD.reading
Doctors in the town are using the books______their studies and treat patients.( )
A.continueB.to continue
C.continuingD.continues
My arm is still painful,_______I'm going to see a doctor.( )
A.soB.forC.butD.or
The little boy has just had lunch.He _____be hungry already.( )
A.must.B.mustn'tC.canD.can't