we spoke in a low voice for fear that we might wake the baby 同义句转换 we spoke in a low voice ---
we spoke in a low voice ---- ---- ---- waking the baby
when she saw a snake
----- ---- ---- ------ a snake
whether we will go camping or not depends on the weather
--------- ------ ----------- the weather --------- we will go camping
i find it is difficult to get them to understand my ideas
i find it difficult to ----- my ideas ----- ------ them