1.We promise (to arrive) there before 7 o'clock.
我们答应七点以前到那里.
2.My sister gets on (well) with her classmates.
我姐姐和她的同学相处很融洽.
3.Dalian is a baeutiful city and (thousands) of people come here for a visit every year.
大连是个美丽的城市,每年数以万计的人来这里游玩.
4.Lily looked around herself but found (nobody).
Lily环顾她的周围,但没发现什么人.