have been striking down和have been struck down 第一句有语法错误吗?最好有例句

have been striking down和have been struck down 第一句有语法错误吗?最好有例句 b,been.come c,been.have been d,come.have bb,been.come c,been.have been d,come.have been from that和from which怎么用?比如 As a result,sadstorms have been striking us now and then,from which(that) we have sufferd a lot.为什么那里用which不用that? How many cities_____you_____so far?A.have；been B.have；gone to C.have；been to D.have；been in where _ he he_to the library.A have been,went B have been ,have been C has been,went继续上面的“D has been,has been How long have you________ English?A.been learnt B.learning C.been learning D.been learn Where have you____,Alice?Garden City.A.gone B.been to c.been in D.been 英语翻译A.can't have been B.mustn't have been C.shouldn't have been D.wouldn't have been in the past the big clock___the hours.1 struck always 2 always struck 3 was always striking 4 has always been striking 选择哪一个,及为什么 have been have been have been have been 句子改错：I (A.have been) (B.learning) English (C.since) I (D.have been) ten. some of the time( )already passed.A.have B.have been C.has D.has been The sick______cured.A、has been B、has C、have been D、have I never there before.A.have;been to B.have;been C.have;gone to D.have;gone They____China for two years.A.have been to B.have been in C.have gone to D.have come to