21.－Why didn' t you answer the phone this afternoon?－We didn' t hear it.I21.－Why didn' t you answer the phone this afternoon?－We didn' t hear it.I was in the garden and Mum __________ a shower.[ A ] has had [ B ] had[ C ] had been having [ D

21.－Why didn' t you answer the phone this afternoon?－We didn' t hear it.I21.－Why didn' t you answer the phone this afternoon?－We didn' t hear it.I was in the garden and Mum __________ a shower.[ A ] has had [ B ] had[ C ] had been having [ D
21.－Why didn' t you answer the phone this afternoon?－We didn' t hear it.I
21.－Why didn' t you answer the phone this afternoon?
－We didn' t hear it.I was in the garden and Mum __________ a shower.
[ A ] has had [ B ] had
[ C ] had been having [ D ] was having
选B还是D?

21.－Why didn' t you answer the phone this afternoon?－We didn' t hear it.I21.－Why didn' t you answer the phone this afternoon?－We didn' t hear it.I was in the garden and Mum __________ a shower.[ A ] has had [ B ] had[ C ] had been having [ D
选D,因为mum的动作是在那个时刻正在进行.

d
过去进行时

D ] was having
洗澡是持续的动作，表示我在花园里的同时，妈妈在洗澡

D ， 说的是妈妈那个时候正在洗澡，电话响的那个时候！

D,与 I was in保持一致。

选d.因为打电话时mum正在洗澡，而不是洗完澡了。

D。过去进行时，那时候正在干什么。

D