—— What are you doing? —— I _____ a letter to my pen pal.
| A．write | B．am writing | C．writes | D．am write |
If farmers trees and forests, giant pandasnowhere to live.
| A．cut down; have | B．will cut down; will have |
| C．will cut don; have | D．cut down; will have |
Hefor ten years.
| A．has been married | B．married | C．got married | D．has married |
Students should learn howproblems.
| A．solve | B．solving | C．can solve | D． to solve |
They arrivedShanghai a cold morning.
| A．in: in | B．in: on | C．at: on | D．at: in |
Who designed this game?
Itby Tom in 1999.
| A．is designed | B．designs | C．was designed | D．designed |