This morning I kept on about this question.
| A．think | B．thought |
| C．to think | D．thinking |
There some water in the glass.
| A．be | B．are | C．is | D．has |
He told us a good way English.
| A．learn | B．to learn | C．learnt | D．learn |
Why not to the park with us tomorrow?
| A．go | B．going |
| C．goes | D．to go. |
There are many tall buildings on _____ sides of the street.
| A．either | B．all |
| C． both | D．every |