1.Washington DC,_________ capital of_________ USA,is a modem city.
A.the; the                 B.a ; a                 C.a; the 
2.It is Very difficult _____________children_____________ the book
A.for:to read              B.to:to read           C.to:read
3.I didn’t go to the meeting not__________ the weather but ____________I didn’t feel well.
A.because of;because      B.because; because of        C.because; because