This ____ not be my book. Mine is rather old.空格处应填什么情态动词?

This ____ not be my book. Mine is rather old.空格处应填什么情态动词? This __ (be not)my pencil case This is not my bike.____(I)is new. my parents ____ （be not）at home now 英语翻译In my opinion,it's not ____ ____ ____with this project.(worthwhile) ____(not be) afraid. I am not sure whether it will be ____ ____(平局) this time. 用所给动词的适当形式填空.1.My mother ____ (wake) me up at 6 o'clock this morning.2.Alan ____ (not turn) off the light before she left the room.3.I ____ (dream) to be a star when I ____ (be) five years old.4.Linda ____ (begin) to play the My teachers ____(not be)in the office now _My teachers ____(not be)in the office now____(not turn )on the radio The baby is sleeping 1.My father ____(watch) CCTV news at 19:00 every day,but yesterday he ___(be)ill and he ___ (not watch）it2.Did you have dun ___(dance)?3.Jim ___(be not)at home now. He ____(go)to New York this morning4.They ___(not go) for an outlook if it __(rain) There ____(be not) so many people in this city ten years ago这空填什么？为什么？ ____(not pull) my hair. My parents ____ not ____ work. I ____(be not)hungry this morning.So I ___(do not)have breakfast.怎么填写啊? Yesterday I ____(be) not at home.I _____(go) to my mum’s home. Yesterday I ____(be) not at home.I _____(go) to my mum’s home. my father ____(not water) flowers yesterday .he_____(be) tired.用适当的词填空 there ____(be not ) any hospitals in my hometown.填什么 为什么?