Have a glass of water, please. You ________ be thirsty after a long walk.

A.should B.must C.need D.could

Necessary action ________ be taken to protect the environment so that we can have a better world.

A.can B.must C.may D.would

It's a rainy day today. ________ you please bring the raincoat for me?

A.Must B.Could C.Need D.Can

(2018张家口桥东区一模) Sorry, I can't go shopping with you. I ________ take care of my little sister.

A.can B.may C.should D.have to

(2018湘潭改编) Did you see the sign "No Swimming"? You ________ swim in this river.

A.needn't B.mustn't C.won't D.mightn't

(2018宜昌改编) I've signed for a big box by Future Express (快递). It ________ be a present from my brother.

A.might B.must C.should D.will

(2018黔东南) You ________ write the report again because spelling mistakes are not allowed at all.

A.may B.can C.must D.could

This book _________

be Lucy’s. Look! Her name is on it.

A.can B.may C.must D.might

The blue coat ________ be Tony's.He never wears blue clothes.

A.can B.must C.can't D.mustn't

(2018苏州) It's not safe for you to go to the forest alone, for you ________ lose your way in it.

A.need B.must C.might D.should