present perfect continuous

[atabitaraf]

Why is it wrong to say:
1. For some time, Jack ....... his paintings to the Perison Gallery.
A. is selling B. has been selling C. has selled
I know that B. is correct but why are A and C incorrect?
Thanks,

[5jj]

Why is it wrong to say:
1. For some time, Jack ....... his paintings to the Perison Gallery.
A. is selling B. has been selling C. has selled
I know that B. is correct but why are A and C incorrect?

'Has selled' is clearly wrong; 'selled' is not a word in English.

In some languages, if something that began in the past still continues, a present (simple or progressive) can be used. In English we need a present perfect construction (progressive or non-progressive) for such situations.

[atabitaraf]

'Has selled' is clearly wrong; 'selled' is not a word in English.

In some languages, if something that began in the past still continues, a present (simple or progressive) can be used. In English we need a present perfect construction (progressive or non-progressive) for such situations.

Thanks,
1. Can we place "has sold" instead of "has selled" for this test ?
2. Can't we use "For some time" dealing with the present time and not the past?

[5jj]

Thanks,
1. Can we place "has sold" instead of "has selled" for this test ?
Yes, but a correct answer, 'has been selling' is given as an option.

2. Can't we use "For some time" dealing with the present time and not the past?
It usually implies an extension into the future: I'm staying in my present flat for some time.

5