When the bell rang announcing the end of class, students came out _____.
| A．by twos and threes | B．by two and three |
| C．by two and three | D．by twos or threes |
There __ no water in the well.
| A．has | B．are | C．is | D．have |
The rice __ cut three weeks ago.
| A．was | B．were | C．has been | D．have been |
That farmer has many ___ on the farm.
| A．geeses | B．gooese | C．goose | D．geese |
Do you brush ___ every day?
| A．your tooth | B．your tooths | C．your teeth | D．teeth |
Many people are still in __ habit of writing silly things in __ puplic places.
| A．the…the | B．/…/ | C．the…./ | D．/…the |