—Millie，where is Miss Li?
—She________a speech on Chinese art to the first-year students in the hall．
| A．gives |
| B．gave |
| C．is giving |
| D．has given |
Not only________polluted but________crowded．
| A．was the city；were the streets |
| B．the city was；were the streets |
| C．was the city；the streets were |
| D．the city was；the streets were |
Boy，your books are everywhere．Please________．
A．put them up
B．put them on
C．put them away
________get off the bus before it stops．
A．Don’t
B．Doesn’t
C．Didn’t
We________wear a uniform at school．
| A．have to |
| B．has to |
| C．had to |
| D．have |