Question

------ your mother----- a house or a flat garden ?  h    как правильно ?has или have 

Answer 1

Я думаю правильный это „Have"

Answer 2

The correct sentence would be:

"Does your mother have a house or a flat garden?"

In this sentence, "does" is the auxiliary verb used with the third person singular (your mother), and "have" is the base form of the verb used after the auxiliary verb. The question is formed by using the auxiliary verb "does" before the subject "your mother."