1.at the beginning of
2.keep sth safe
3.be ready to do sth
4.pack schoolbag
5.do sth else
6.take shower
7.read old magazine
8.in four programs
9.sit on soft
setence
1.He writes more carefully than me.
2.I give the letter to him when he sits on the soft.
3.Sandy get the second place in a race; she is faster than Emily.
4.It is snowing when we reach the airport.
5.There is no need to open your eyes when doing eye exercise.
6.Bejing is larger than any city in Jiangsu Province.
7.I don't jump as far as Tom.