Jeff， is this______________ notebook？
No， it's not __________．Maybe it's Mary's． （ ）
A．your， myB．your， mineC．yours， me
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