There are many trees on ________ side of the street.
| A．either | B．any | C．all | D．both |
—Would you like________water？
—________．
| A．some；Yes，please |
| B．any；Yes，please |
| C．some；Yes，please not |
| D．any；No，thanks |
Each of the girls________wearing a beautiful skirt now．
| A．is |
| B．are |
| C．am |
| D．be |
Please tell us how things used________．
| A．to be |
| B．being |
| C．to being |
| D．be |
They volunteer________at the local hospital．
| A．to work |
| B．working |
| C．work |
| D．to working |
That boy looks very unhappy．Let’s________．
| A．to cheer up him |
| B．to cheer him up |
| C．cheer him up |
| D．cheer up him |