سؤالين مهمين وارجو الاجابة سريعا

[روز روز]

1. The world economic situation is bad, so companies of all sizes have low ................ problems.
a- money b- goods c- yield d- workers

1. I knew him last year. Since then, we ................... every week.
a- meet b- have met c- met d- were meeting
Find the mistake
My uncle visited us yesterday. He hasn't visited us since last year.