1.你最好不要单独去游泳.You'd( better not to swim alone ).
2.这箱子太重,这小孩搬不动.The box is( too heavy for the child to move ).
3.每天我父亲去上班需要一个半小时.Every day it( take my father one hour to go to work ).
4.瞧!树下有一位老人正在观看孩子们玩游戏.Look!There is an old man under the tree( who is watching children's playing ).
5.我感到这个问题很难回答.I found( the question is too hard for me ).