As autumn announces its coming, the trees _____ turn yellow, which means winter will draw near too.
| A．freely | B．actually |
| C．gradually | D．frequently |
The trees ____ front of the house are ____ the charge of Old Li.
| A．in; in | B．at; in | C．in; by | D．from; in |
- Do you go there ____ bus? - No, we go there ____ a train.
| A．in; on | B．on;on | C．by;in | D．by; with |
In Hangzhou Mr Green was so struck ____ the beauty of nature that he stayed ____ another night.
| A．at;on | B．with;at | C．for;in | D．by;for |
He is running ____ the wind towards the east of the station ____ Tom is running ____ the right.
| A．down; and; on | B．against; while; on | C．for;with;in | D．with; while; to |
I don't think you can work out the maths problem ____ the teacher's help.
| A．since | B．unless | C．because | D．without |