■受動態(4)
[問1]speak

[答1]spoke - spoken 話す

[問2]take

[答2]took - taken 取る

[問3]teach

[答3]taught - taught 教える

[問4]write

[答4]wrote - written 書く

[問5]At that time candles (be) used for lights.(語形変化)

[答5]were

[問6]Many trees were cut down.(疑問文に)

[答6]Were many trees cut down ?

[問7]The sign is written in English.(否定文に)

[答7]The sign isn't written in English.

[問8]Everyone likes her.(受動態に)

[答8]She is liked by everyone.

[問9]She introduced him to the class.(受動態に)

[答9]He was introduced to the class by her.