They have done ____ work these days.

They have done ____ work these days. ____ time we have suffered these days! 1,＿useful work they have done! They _______ (work) on a farm these days. These days they are busy ( ) the farm work填介词 ①They ____(plan) a trip to Shanghai these days. He is busy.He keeps ____ these days. A work B to work C work ___good work they have done!A.How B.what 有these days的句子应该用过什么时态?He ____(work)on the farm these days. They must have done their homework yesterday,____? we rarely ____ these days. they are very busy these days.they only have one day to rest