受動態の文になるように（）内に適切な語を入れてください。
(1)Alice was writing the letter at that moment.
⇒The letter()()() by Alice at that moment.
(2)Is the police officer watching you?
⇒() you ()() by the police officer?
(3) They are building a new bridge across the river.
⇒A new bridge ()()() across the river.
上記の問題で、
(1)The letter(was)(being)(written) by Alice at that moment.
(2)(Are) you (being)(watched) by the police officer?
(3)A new bridge (is)(being)(built) across the river
で合ってますか？
宜しく御願い致します＞＜
