一、单句语法填空。
在每句空白处填入适当的内容或括号内单词的正确形式。
1.While you are out, you should keep your doors and windows ______(close).
2.Michael put up a picture of Yao Ming beside the bed to keep himself ______(remind) of his own dreams.
3.With the rapid development of communication, now all fishing boats are ______ (equip)with radio.
4.He opened the envelop, had it_____(unfold) and began to read it.
