Rachel，you'd better come to school on time tomorrow!
（ ）
| A． |
That sounds good． |
B． |
Sure，I will． |
| C． |
Sorry，I won't． |
D． |
I don't know． |
The number of the old people is increasing in China．With the development of China，they _____ better care of in the future．（ ）
| A． |
will take |
| B． |
are taken |
| C． |
will be taken |
Neither he nor I was playing computer games at this time yesterday．We ______ trees in the neighborhood．（ ）
| A． |
were planting |
| B． |
planted |
| C． |
are planting |
I saw Jim ______ into that new building just now．
Oh，it's our new library．It ______ to the public for a week．（ ）
| A． |
walk； has opened |
| B． |
walk； has been open |
| C． |
walking； has opened |
______ shocking news!It is reported that the UK is repeatedly under terror attack．
So it is．We should call on the people all over the world to be against terrorism（恐怖主义）．（ ）
| A． |
What an |
B． |
How |
C． |
What |
Look!The man at the school gate _________ be our headmaster．He is always standing there to welcome us every morning．
No，it _______ be him．He is holding a meeting in the office now．（ ）
| A． |
must； can't |
| B． |
must； mustn't |
| C． |
can't； mustn't |