--When did you get the gift? -- _____ my _____ birthday.
| A．On, sixth | B．In, sixth | C．On, six | D．In, six |
—Zhang Lei, do you have _______ soccer ball?
—Yes, I do.
| A．a | B．an | C．the | D．/ |
Can the scientist ______ [iks'plein] the reasons for changing the plan?
| A．explain | B．experience | C．explore | D．expensive |
I usually ______/'præktIs/ the piano after school.
| A．practice | B．popular | C．problem | D．person |
Most of the students in our city go to school by ______ [baik].
| A．back | B．dark | C．bark | D．Bike |
We should _______/ki:p/ quiet in the library.
| A．sleep | B．help | C．keep | D．cheap |