----May I smoke here ?
-----If you , choose a seat in the smoking section .
| A．should | B．could | C．may | D．must |
. When it comes to bringing up children, some people say ____ discipline produces __ ____ happy, well-behaved child.
| A．/; a | B．the; a | C．a; / | D．a; a |
. She thought it __ great experience as she enjoyed the beauty of ___ nature.
| A．a; / | B．a; the | C．the; / | D．the; a |
What ___ of blood does Jack have?
| A．sort | B．type | C．category | D．kind |
. Deer____ mainly on grass.
| A．live | B．lives | C．feed | D．feeds |
. Why didn’t you come? Haven’t you __________?
| A．allowed | B．promised | C．invited | D．agreed |