_____Friday afternoons，many students are sleepy after a long week of classes．
A．In B．On C．At
Tom went shopping by ______bus but when he got off it, he was hit by________ bike.
| A．a; a | B．/; / | C．/; a | D．the; a |
Which sign means International Committee of the Red Cross.
A. 
B. 
C. 
--- Every year, _______ visitors go to Mount Huang for a visit.
--- That’s right. It is the most beautiful mountain in China.
A. millions of B. million of C. million
China is a _________ country while Japan is a _________country.
A. developed; developing
B. development; developing
C. developing; developed
--- The pollution is becoming more and more serious in our hometown.
--- That’s right. We should do ________ we can to protect the environment.
A. nothing
B. everything
C. something