Whose textbook is it？ Is it Jenny's？
No， it ________ be Jenny's． Look， Helen's name is on the cover． I think it ________ be Helen's．
（ ）
A．can't；mustB．mustn't；must
C．can't；mayD．mustn't；may
Must we finish the work today？
________．We have something else to do tomorrow．（ ）
| A． |
Yes，we can |
B． |
No，we can't |
| C． |
Yes，we must |
D． |
No，we needn't |
It's sports time．Most ________ students in Class 1are playing football on the playground．（ ）
| A． |
boy |
B． |
boys |
C． |
boy's |
D． |
boys' |
You should ask Bob ______ his own clothes．He is ten years old now．（ ）
| A． |
wash |
B． |
washes |
C． |
washing |
D． |
to wash |
It's hot today．Have some ______ please．
No，thanks．I'm not thirsty at all．（ ）
| A． |
water |
B． |
potatoes |
C． |
bread |
D． |
cakes |
I ______ the History Museum twice．I've learned a lot there．（ ）
| A． |
visit |
B． |
am visiting |
| C． |
have visited |
D． |
will visit |