These days,many families keep pet dogs为什么keep不加s 呢还有,我不懂什么时候,什么句式和形态后动词加s 或者不加s

These days ,many students It's humid these days.The______ lasts for many days These days many students like to make friends on line. Many students can enjoy f() lunch at school these days. They have done ____ work these days.too much much too too many many too I am sorry to reply to you so late.I am sorry I'm wrong.I wrote two incorrect words in the last letter.These days I'm going to stay with my family members until the term begins.Sadly,my grandfather passed awayThese days I'm going to stay with my fami people are so busy these days that many have no time to many people are so busy these days that they have mo time to cook同义句 There is _____ rain these days.It's hot and dry.A.littleB.muchC.fewD.many They have done ____ work these days.A:too muchB:much tooC:too manyD:many too These days students have too many homework to do every day.哪错? he has eaten many animals of our village these days这里的OF在解释 These days,you can shop for many French foods in large cities in China.同义句 this kind of phone has so many fu____ that it sells well these days How many days will these films be on here ____A23 B 24 C 25 D 37 How many days will these films be on here ____A23 B 24 C 25 D 37 I'm busy these days.I have____to do .A.so many B.too many C.too much D.very much these days 是什么时态?