---Why does Tommy look unhappy ?
--- Because his teacher makes him _______ the classroom all by himself .
| A．to clean | B．clean | C．cleans | D．cleaning |
一Why not stay here a little longer?But I really have to go．
| A．Never mind． | B．I can’t find any reason． |
| C．I’d love to． | D．Pleased to meet you． |
Finally Gulliver broke the rope andfrom those troy men·
| A．put away | B．ran away |
| C．took away | D．kept away |
They haven been our friendswe met ten years ago．
| A．for | B．since | C．ever | D．when |
Don’t worry．We have theto answer many of these questions·
| A．situation | B．novel | C．detail | D．knowledge |
The government has planted many trees onsides of the streets．
| A．all | B．every | C．each | D．both |