They are twins (双胞胎), but they look .
A. good-looking B. sad C. different
Remember to look around ________ you cross the road, boys and girls.
| A．till | B．before | C．until | D．After |
You'd better spend as much time as you can________ Maths and English.
| A．learning | B．to learn |
| C．have learned | D．Learned |
You should try your best to learn to swim ________ Tom.
| A．as good as | B．as better as |
| C．as well as | D．so well as |
Excuse me, you ________ open the door before the bus stops.
| A．needn't | B．may not |
| C．don't have to | D．mustn't |
—Jack will go to Dalian for his summer holidays. How about you?
—Sorry, I haven't decided ________．
| A．where to go to | B．how to go |
| C．when to go | D．where to go |