根据句意和汉语提示,用适当的短语补全句子。 1.Today our English teacher ________________(看上去很严肃). 2. Now my brother ________________(对……更感兴趣) playing basketball. 3. He is only a child. Of course he (对……感到害怕) being alone. 4. Both my brother and sister are ______________(学校乒乓球队队员). 5. We were unable to ___________(入睡) last night because of the noise outside.