I.单选题（每小题2分，共40分）
( ) 1.He has egg and hamburger.
A.an, an B.a, a C.an, a D. a, an
( ) 2.We usually have our school trip a morning of April.
A.in B.at C.to D.on
( ) 3.---Do you like volleyball?
---Yes, . It’s interesting.
A.I do B.I don’t C.it is D.it isn’t
( ) 4. he a computer?
A.Does, has B.Does, have C.Do, have D.Do, has
