___________， you will get good grades．（ ）
A．If you will work hard
B．If you work hard
C．If you worked hard
Mary， do you prefer weekdays or weekends？
Of course weekdays． Because I'm on weekends．（ ）
| A． |
busy |
| B． |
much busier |
| C． |
the busiest |
How beautiful your skirt is! Could you please tell me ？
Thanks． I bought it on Taobao．（ ）
| A． |
where you bought it |
| B． |
when you bought it |
| C． |
why you bought it |
Yesterday， I the subway home when I suddenly found I was on the wrong line．（ ）
| A． |
took |
B． |
was taking |
C． |
had taken |
Sally， I heard you're going to America． Will you stay there？
Two whole years．（ ）
| A． |
How soon |
B． |
How often |
C． |
How long |
Wow…another gift! What's in the box？
I'm not sure． It be a pair of sports shoes．（ ）
| A． |
must |
B． |
may |
C． |
will |