初三英语（急）Weneverafriend'shousewithoutcallingfirst是写dropby还是callon,为什么?IcouldgiveyouaclassonJapanesetablecustomReally?A.It'sverykindofyouB.Thatwouldbegreat

Question

初三英语（急）
We never _____ _____ a friend's house without calling first
是写drop by还是call on,为什么?
I could give you a class on Japanese table custom
Really?___________
A.It's very kind of you
B.That would be great

Answer 1

drop by
drop by有突然拜访的意思,call on 是拜访和号召,而它的前提是约好.
第二个题应该是b,不知道对不对,语感