A smart phone makes a big _______ to our life．（ ）
| A． |
difference |
B． |
decision |
C． |
progress |
D． |
prediction |
Taking a subway in Chengdu is much_________ than taking a taxi．（ ）
| A． |
cheap |
B． |
cheaper |
C． |
cheapest |
The girl in the music room _________be Celia．She has gone to the dining hall．（ ）
| A． |
can't |
B． |
must |
C． |
may |
________fine weather it is！（ ）
| A． |
What a |
B． |
How |
C． |
What |
What did you do the day before yesterday？
1_______for an English test．（ ）
| A． |
study |
B． |
studied |
C． |
studying |
______does Mary watch TV？
She watches TV twice a week．（ ）
| A． |
How often |
B． |
How soon |
C． |
How far |