Yan Jiashuo，a _____ girl，has won the prize of International Master of Memory．
Wow，she's great，isn't she？（ ）
A．ten﹣year﹣oldB．ten﹣years﹣old
C．ten year oldD．ten years old
Did you see a man in black pass by just now？
No，sir．I ______ my car．（ ）
A．washB．washed
C．am washingD．was washing
I hear you have a home robot．
Yes，it's amazing．It ______ do all my housework．（ ）
A．mustB．shouldC．couldD．can
What will the phone ______？
The same as you said，eight hundred dollars each．（ ）
A．spendB．costC．payD．afford
Hi，guys．Where were we yesterday？
We learned the differences ______ fact and opinion．（ ）
A．betweenB．amongC．duringD．beyond
They have provided several ways to solve the problem．We can choose _______ to start with．（ ）
A．itB．thatC．oneD．each