How long have you learned English—So far, we ________ English for more than six years.

The task is challenging and demanding. Who do youthink can make it, Tom–_______ my partner have a try I think she is theright person to do it.

We were in our investigation(调查)by the cooperation of the local police.[ ]

George returned after the war, only _______ that his wife had left him

No one but you knows your heart is racing, so take a breath and try to ________ down.[]