Chen Wei isn't at school today ________ he is taking a robot competition in Shanghai．（ ）
| A． |
so |
B． |
because |
C． |
before |
D． |
if |
You mustn't drive a car on the road____ you get a driver's license． （ ）
A．unlessB．ifC．since
How many apples can I have？
You can have two．___are for Jim． （ ）
A．The othersB．OthersC．The other
Do the twins look the same？
No． Jane is____ taller than Claire． （ ）
A．littleB．moreC．a little
Is the man over there Adam？
It ____ be him． He has gone to Hong Kong on vacation． （ ）
A．mustB．can'tC．mustn't
The weather report says it's going to have a shower this afternoon．
It does？ We'd better____now， just in case． （ ）
A．to leaveB．leavingC．leave