同义句转换:My sister fell asleep while she was watching TV last night.My sister fell asleep while she was watching TV last night.My sister fell asleep ( ) ( )was watching TV last night.
问题描述:
同义句转换:My sister fell asleep while she was watching TV last night.
My sister fell asleep while she was watching TV last night.
My sister fell asleep ( ) ( )was watching TV last night.
答
when she