Mum won't let Simon go out unless he promises to be back ______ 10 o'clock tonight．（ ）
A．tillB．beforeC．asD．since
Two students in our school are from the countryside．（ ）
| A． |
hundred of |
| B． |
hundreds of |
| C． |
hundred |
| D． |
hundreds |
Miss Liu is very beautiful and kind．We all like （ ）
| A． |
her |
B． |
she |
C． |
them |
D． |
him |
Tom has useful book， book is very interesting．（ ）
| A． |
the；A |
B． |
a；The |
C． |
an；A |
D． |
an；The |
My favorite is spring．I can fly kites with my friend．（ ）
| A． |
month |
B． |
day |
C． |
weekend |
D． |
season |
Must I stay here with you，Mum？（ ）
No，you ．You may go home now，but you go to the net﹣bar．
| A． |
mustn't； needn't |
B． |
needn't； mustn't |
| C． |
must； need |
D． |
need； must |